CN1994236A - Clip applier with migrational resistance features - Google Patents

Clip applier with migrational resistance features Download PDF

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Publication number
CN1994236A
CN1994236A CNA2006101444927A CN200610144492A CN1994236A CN 1994236 A CN1994236 A CN 1994236A CN A2006101444927 A CNA2006101444927 A CN A2006101444927A CN 200610144492 A CN200610144492 A CN 200610144492A CN 1994236 A CN1994236 A CN 1994236A
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CN
China
Prior art keywords
anchor clamps
jaw
track
trigger
clip applier
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CNA2006101444927A
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Chinese (zh)
Inventor
托马斯·W·休特马
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ethicon Endo Surgery Inc
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Ethicon Endo Surgery Inc
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Publication date
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Application filed by Ethicon Endo Surgery Inc filed Critical Ethicon Endo Surgery Inc
Publication of CN1994236A publication Critical patent/CN1994236A/en
Pending legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
    • A61B17/128—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord for applying or removing clamps or clips
    • A61B17/1285—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord for applying or removing clamps or clips for minimally invasive surgery
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/10—Surgical instruments, devices or methods, e.g. tourniquets for applying or removing wound clamps, e.g. containing only one clamp or staple; Wound clamp magazines
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
    • A61B17/122—Clamps or clips, e.g. for the umbilical cord
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
    • A61B17/128—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord for applying or removing clamps or clips
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
    • A61B17/0682—Surgical staplers, e.g. containing multiple staples or clamps for applying U-shaped staples or clamps, e.g. without a forming anvil
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/03—Automatic limiting or abutting means, e.g. for safety
    • A61B2090/032—Automatic limiting or abutting means, e.g. for safety pressure limiting, e.g. hydrostatic
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S227/00—Elongated-member-driving apparatus
    • Y10S227/901—Surgical clip appliers

Abstract

A surgical clip applier and methods for applying surgical clips to a vessel, duct, shunt, etc., during a surgical procedure are provided. In one exemplary embodiment, a surgical clip applier is provided having a housing with a trigger movably coupled thereto and a shaft extending therefrom with opposed jaws formed on a distal end thereof. The trigger is adapted to advance a clip to position the clip between the jaws, and to move the jaws from an open position to a closed position to crimp the clip positioned therebetween. The surgical clip applier can include a variety of features to facilitate use of the device, including features to align a clip with the jaws, features to prevent unintentional migration of a clip, and features to prevent clip fallout during formation.

Description

Have the clip applier that stops the parts that move
The cross reference of related application
The present invention is the U.S. Patent application No.10/907 that is entitled as " Surgical Clip ApplierMethods " that submitted on April 14th, 2005,763, the U.S. Patent application No.10/907 that is entitled as " Force Limiting Mechanism For Medical Instrument " that on April 14th, 2005 submitted to, 764, the U.S. Patent application No.10/907 that is entitled as " Surgical ClipAdvancement Mechanism " that on April 14th, 2005 submitted to, 765, the U.S. Patent application No.10/907 that is entitled as " Surgical Clip Applier Ratchet Mechanism " that on April 14th, 2005 submitted to, the U.S. Patent application No.10/907 that is entitled as " SurgicalClip Advancement And Alginment Mechnism " that on April 14th, 766 and 2005 submitted to, 768 part continuation application.These files are incorporated full text into the application by reference at this.
Technical field
The present invention relates generally to surgical device, relates to more specifically being used for surgical clip is applied to method and apparatus on conduit, vascular, the isocon etc.
Background technology
In recent years, surgery was by the existing obvious improvement of the execution of peritoneoscope and endo-surgical, these for example reparations of cholecystectomy, gastrostomy, appendectomy and hernia of performing the operation.Finish these operations and will pass through trocar assembly, it is to be used to puncture the surgical instruments of body cavity.The trocar typically comprises sharp-pointed obturator tip and sleeve pipe needle tubing or intubate.By using the obturator tip transdermal that trocar cannula is inserted skin with near body cavity.After puncture, remove occluder and trocar cannula is stayed in the body.Put into surgical instruments by this intubate just.
A kind of surgical instruments of using with trocar cannula usually is the surgical clip applier that is used in surgical procedures ligation blood vessel, vascular, isocon or tissue part.Most of clip appliers have the handle that has slender axles usually, and this is formed with a pair of movable relative jaw in its end, are used for fixing betwixt and formation ligation anchor clamps.Around vascular or conduit, locate jaw, and anchor clamps are flattened or on blood vessel, be shaped by the closure of jaw.
In many clip appliers of prior art, conveying and builder require the synergy movement of accurate timing and the element that will operate.This requirement to accurate timing and control needing to cause the complicated mechanical design, has increased the cost of clip applier thus.The clip applier of many prior aries also uses spring to load the anchor clamps propulsion assembly, passes the axle of device so that one or more anchor clamps advance.As a result, jaw must comprise the mechanism that is used to prevent the unexpected emission of anchor clamps before anchor clamps form.Other shortcoming of existing clip applier comprises can not handle the overload that is applied to jaw under multiple situation by trigger.The complete closure of many matching requirements jaws, and excessive and can not be closed fully the time when being positioned at vascular between the jaw or conduit, or can cause overload on jaw when between jaw, foreign object being arranged.
Therefore, still need a kind of being used for that surgical clip is applied to method and apparatus on vascular, conduit, the isocon etc.
Summary of the invention
The invention provides and be used for surgical clip is applied to method and apparatus on vascular, conduit, the isocon etc.In an exemplary embodiment, the surgical clip applier that provides has shell, and trigger movably is connected to this shell, and slender axles stretch out from this shell, is formed with opposed jaws at the far-end of these slender axles.Trigger is suitable for advancing anchor clamps, and so that anchor clamps are positioned between the jaw, and trigger is suitable for jaw is moved to make position from deployed position, is positioned at anchor clamps therebetween to curl.
Surgical clip applier has multiple structure, and it can comprise the propelling of being convenient to surgical clip and the multiple parts of shaping.In one embodiment, surgical clip applier can comprise the feeding shoe, and it is arranged in the slender axles slidably and is suitable for driving at least one surgical clip and passes through slender axles.In an exemplary embodiment, this feeding shoe is suitable for a distal direction motion, thereby prevents feeding shoe proximal motion basically.Slender axles also comprise the anchor clamps track, and this anchor clamps orbital arrangement is in slender axles and be suitable for settling at least one surgical clip.The feeding shoe is arranged in the anchor clamps track slidably.
Can use multiple technologies to be convenient to feeding shoe distal direction motion and prevent feeding shoe proximal motion.In an one exemplary embodiment, the feeding shoe comprises tang, and this tang is suitable for engaging with the anchor clamps track preventing feeding shoe proximal motion in the anchor clamps track, but this tang allows feeding shoe distal motion in the anchor clamps track.The anchor clamps track comprises that formation is used to receive several openings of tang within it, to prevent feeding shoe proximal motion in the anchor clamps track.In another one exemplary embodiment, the feeding shoe comprises tang, and feed bar comprises that several are formed at locating slot wherein, and described locating slot is suitable for engaging with tang with distal motion feeding shoe when the distal motion feed bar.
In another embodiment, slender axles comprise to be arranged within it and the feed bar that is connected with trigger slidably, thereby trigger is suitable for promoting the feed bar distal motion to the motion of make position, thus push feed shoe distal motion.As unrestricted example, feed bar is by being connected with trigger with the trigger insert of trigger cooperation and the connecting rod that extends between trigger insert and feed bar near-end.The feed bar near-end comprises coupling, and it is suitable for the receiving unit connecting rod.Feed bar also comprises having angle of rake far-end, and this propeller is suitable for engaging and drive the farthest side anchor clamps with the farthest side anchor clamps and enters jaw.In some one exemplary embodiment, feed bar is suitable for engaging with the farthest side anchor clamps before the feeding shoe and beginning to advance the farthest side anchor clamps to enter jaw beginning to promote.
In yet another embodiment, be provided for advancing anchor clamps to pass through the anchor clamps propulsion assembly of surgical clip applier.This anchor clamps propulsion assembly can use with multiple surgical clip applier, comprises that those are known in the art.In an one exemplary embodiment, the anchor clamps propulsion assembly can comprise: the anchor clamps track, and it is suitable for settling at least one anchor clamps; With the feeding shoe, it is suitable for cooperating slidably with the anchor clamps track and moving along distal direction, is arranged at least one anchor clamps in the anchor clamps track to move along the distal movement direction.In an one exemplary embodiment, the feeding shoe comprises tang, and it is suitable for engaging with the anchor clamps track preventing the feeding shoe proximal motion in the anchor clamps track, and is suitable for allowing the feeding shoe distal motion in the anchor clamps track.This anchor clamps track comprises that formation is used to receive a plurality of openings of tang within it, to prevent feeding shoe proximal motion in the anchor clamps track.
The anchor clamps propulsion assembly also comprises feed bar, its be suitable for be formed on the surgical clip applier shell on movable trigger be connected, and when closure trigger, be suitable for distad moving slidably, with push feed shoe and at least one anchor clamps that is arranged in the anchor clamps track.This feed bar can have multiple structure, and in an one exemplary embodiment, the far-end of feed bar comprises propeller, and it is suitable for engaging with the farthest side anchor clamps and the farthest side anchor clamps being entered the jaw that is formed on the surgical clip applier far-end from the driving of anchor clamps track.In another one exemplary embodiment, the feeding shoe comprises tang, and feed bar comprises a plurality of locating slots that are formed at wherein, and described locating slot is suitable for engaging with tang with distal motion feeding shoe when the distal motion feed bar.In use, the feed bar near-end comprises coupling, and it is suitable for receiving the connecting rod of the trigger that is used to connect feed bar and surgical clip applier.
Also provide and be used to advance surgical clip to pass through the exemplary method of the slender axles of surgical clip applier.In one embodiment, can in the slender axles of surgical clip applier, distad advance feed bar, be arranged on the feeding shoe in the slender axles and advance at least one anchor clamps to far-end thus distad to advance.Can distad advance feed bar by for example actuating trigger, this trigger is connected with shell and cooperates with the slender axles near-end.In an one exemplary embodiment, when distad advancing feed bar, engage with the farthest side anchor clamps and anchor clamps are advanced between the relative jaw that is formed at the slender axles far-end at the propeller of feed bar far-end.It is interior to the proximal retraction feed bar that this method also is included in slender axles, simultaneously the feeding shoe remained on fixed basically position.
In another one exemplary embodiment, be provided for discharging the method for surgical clip device, and this method comprises makes the trigger that is connected to shell towards make position first distance of moving, be arranged in anchor clamps propulsion assembly in the shell with actuating, advancing anchor clamps to enter with this is formed in the jaw assembly of slender axles far-end, further make trigger to make position motion second distance, the anchor clamps that are arranged in the shell with actuating form assembly, form the anchor clamps that are arranged in the jaw assembly with this.Trigger forms between the assembly period of energization preferably compliance of anchor clamps propulsion assembly relatively at anchor clamps.It also is compliance that anchor clamps form assembly relative jaw assembly between its period of energization.
In others, provide a kind of overload mechanism that uses with surgical device.In an one exemplary embodiment, overload mechanism comprises the power receiving member, and it is arranged in the shell pivotly and slidably, and has the surface that has first end and second opposed end, and being arranged in bias assembly in the shell, it is suitable for stoping the motion of power receiving member.In an one exemplary embodiment, resistance increases to second end from first end.
The power receiving member can have multiple structure, but in one embodiment, power receiving surface formed thereon is positioned in the opening of shell.This power receiving surface comprises first, and it is suitable for receiving and is used in the shell power of motoricity receiving member pivotly, and second portion, and it is suitable for receiving and is used in the enclosure the power of motoricity receiving member slidably.Bias assembly also can have multiple structure, but in one exemplary embodiment, bias assembly comprises the spring of arranging around spring stack, and the relative striker arranged slidably of spring stack, this striker has head formed thereon, when striker when spring stack moves slidably, this head is suitable for compressing spring.
In another embodiment, shell can comprise pivot assembly, and it is connected between power receiving member and the bias assembly, so that the power that pivot assembly is suitable for being applied on the power receiving member is delivered on the bias assembly to overcome resistance.In an one exemplary embodiment, pivot assembly comprises: elbow connection rod, and it is connected with the power receiving member pivotally; And pivot links, it is connected with elbow connection rod pivotally, and is suitable for bias assembly is applied power when its pivoting action.
In another embodiment, the surgical clip applier that provides has the overload mechanism that is used to prevent be applied to the closing force overload of clip applier.In an one exemplary embodiment, surgical clip applier comprises: the shell that trigger is movably coupled; From the slender axles that shell stretches out, these slender axles have the opposed jaws that is formed at its far-end, and this jaw can be in deployed position and make position motion; And be arranged in shell and the slender axles and the cam pack that is connected with trigger.This cam pack is suitable for when trigger-actuated closing force being applied to jaw, so that jaw is moved to make position from deployed position, and when closing force when being applied to the overload mechanism resistance of overload assembly, this camming also is suitable for transmitting closing force to the overload mechanism that arranges in the enclosure.In an one exemplary embodiment, overload mechanism resistance with jaw moved to the needed power of make position from deployed position be associated.
Though can use multiple technologies that cam pack is connected with overload mechanism, in an one exemplary embodiment, cam pack transships the power receiving surface motion of mechanism relatively, so that apply the power receiving surface that the closing force of cam pack is crossed overload mechanism, similarly actuating trigger makes cam pack that jaw is moved to make position from deployed position.The power receiving surface of overload mechanism can be suitable for stoping the motion of proximal direction, and jaw resistance when deployed position moves to make position will be risen with respect to the power receiving surface when actuating trigger makes cam pack.
In another one exemplary embodiment, overload mechanism can comprise that shell has and slidably be arranged in wing connecting rod wherein pivotally and have formation and the contiguous power receiving surface that is formed on the shell inner opening in location thereon.The power receiving surface comprises that first is suitable for receiving and is used for the power of motion shell internal force receiving member pivotally, and second portion is suitable for receiving and is used for the power of motion shell internal force receiving member slidably.Overload mechanism also can comprise bias assembly, and it is suitable for applying resistance to wing connecting rod.In an one exemplary embodiment, bias assembly is connected with wing connecting rod by pivot assembly, pivot assembly is suitable for pivoting when wing connecting rod pivoting action, and pivot assembly is suitable for slip bias assembly is applied power to overcome resistance when wing connecting rod sliding motion.
The method that is used to use the surgical clip applier with overload mechanism also is provided.In an one exemplary embodiment, can apply closing force to a pair of jaw that forms on section's clip applier outside.This closing force can move to make position with opposed jaws from deployed position effectively.When closing force greater than the overload mechanism threshold force the time, with closed force transfer to the overload mechanism that is arranged in the surgical clip applier.In an one exemplary embodiment, when jaw when deployed position moves to make position, the threshold force of overload mechanism raises.
Though overload mechanism can have multiple structure, in an one exemplary embodiment, overload mechanism can comprise the bias assembly that is suitable for receiving the power receiving member of closing force and is suitable for stoping the motion of power receiving member response closing force.This surgical clip applier can comprise cam pack, and this cam pack is suitable for applying closing force to jaw, and comprises the roller member, and the power receiving member is crossed in its rolling when jaw is applied closing force.When the power receiving member was crossed in the rolling of roller member, the threshold force of overload mechanism raise.Particularly, when the first of power receiving member is crossed in the rolling of roller member, if closing force is greater than threshold force, the power receiving member can pivot, and roll when crossing the second portion of power receiving member when the roller member, if closing force greater than threshold force, the power receiving member is slidably.In an one exemplary embodiment, the required threshold force of pivotal force receiving member is less than the required threshold force of sliding force receiving member.
In others, surgical clip applier is provided, it comprises: the anchor clamps propulsion assembly, it is connected with trigger and is suitable for advancing the slender axles of at least one anchor clamps by stretching out from shell; Form assembly with anchor clamps, its be connected with trigger and be suitable for activating be formed at the slender axles far-end the jaw assembly with the formation surgical clip.Trigger can be connected and be suitable for the actuated clamps propulsion assembly with shell and anchor clamps form assembly.In an one exemplary embodiment, trigger has two continuous stages of actuating, the phase I that is activating, the effective actuated clamps propulsion assembly of trigger, in the second stage that activates, the effective actuated clamps of trigger forms assembly, and the relative anchor clamps propulsion assembly of trigger is a compliance simultaneously.
In other embodiments, surgical clip applier has the parts that are not intended to motion that for example prevent anchor clamps between the device delivery period.In an one exemplary embodiment, surgical clip applier has the anchor clamps propulsion assembly of band pusher mechanism, and this arrangement of mechanism also can be to the jaw motion to advance a plurality of anchor clamps to enter jaw continuously in the anchor clamps track.Pusher mechanism is suitable for producing frictional force with the anchor clamps track, by mistake move to prevent the pusher mechanism in the anchor clamps track, but when the anchor clamps propulsion assembly activated, it is suitable for motion distad to promote pusher mechanism.
Though can use multiple technologies to produce frictional force between pusher mechanism and anchor clamps track, in one embodiment, the anchor clamps track comprises formed thereon one or more and contact with pusher mechanism to produce the projection of frictional force with the anchor clamps track.In another one exemplary embodiment, pusher mechanism comprises that formed thereon and bias voltage feeding shoe is to produce the flexible tang of frictional force with the anchor clamps track.Flexible tang comprises that formation and be suitable for engaging the flange that is formed on the respective ridges in the feeding shoe thereon.In another one exemplary embodiment, pusher mechanism has cantilever structure to produce frictional force with the anchor clamps track.In one embodiment, the opposing sidewalls bias voltage pusher mechanism of extending along the anchor clamps track length to straight basically cross section, produces frictional force from the cross section of V-arrangement basically thus.
In another one exemplary embodiment, the surgical clip applier that is provided has the shell that has the trigger that movably is connected thereto, and the axle that extends from shell, and this has the opposed jaws that is formed on its far-end.The anchor clamps track extends through from this axle and is suitable for keeping a plurality of anchor clamps.This surgical clip applier also comprises the feeding shoe, and it is arranged in the anchor clamps track slidably and is suitable for advancing a plurality of anchor clamps by the anchor clamps track.This feeding shoe is configured to produce frictional force with the anchor clamps track and by mistake moves to stop the feeding shoe.For example, feeding shoe and/or anchor clamps track can comprise at least one projection, flexible tang or other surface elements, to be suitable for producing frictional force with the anchor clamps track.In other embodiments, pusher comprises flexible tang, and it has formation and be suitable for engaging the flange that is formed on the respective ridges in the anchor clamps track thereon.Optionally, or in addition, the feeding shoe has cantilever structure, to produce frictional force with the anchor clamps track.The anchor clamps track comprises the stayed surface that has along the opposing sidewalls of its extension, and the feeding shoe is arranged between the opposing sidewalls slidably.Opposing sidewalls bias voltage feeding shoe to straight substantially cross section, produces frictional force with this from the cross section of basic V-arrangement
In another one exemplary embodiment, the surgical clip applier that is provided has shell, axle from the shell extension, be formed on this far-end and be suitable for holding betwixt first and second jaws of tissue, the anchor clamps track extends through from this axle and is suitable for keeping a plurality of anchor clamps, is arranged in the anchor clamps track and is suitable for advancing a plurality of anchor clamps by the anchor clamps track and enter the anchor clamps pusher of first and second jaws.This anchor clamps pusher is subjected to bias voltage in the anchor clamps track, thereby prevents the motion of anchor clamps pusher, up to the power on the anchor clamps pusher of being applied to greater than the biasing force that between anchor clamps pusher and anchor clamps track, produces.
In an one exemplary embodiment, the anchor clamps pusher comprises that formation and be suitable for the bias mechanism of bias voltage anchor clamps pusher in the anchor clamps track thereon.Bias mechanism comprises and for example is formed on the projection on the anchor clamps pusher or is formed on flexible tang on the anchor clamps pusher.In other embodiments, the width of anchor clamps pusher is greater than the anchor clamps track width, so that be biased in the interior anchor clamps pusher of anchor clamps track.In an one exemplary embodiment, the anchor clamps pusher is by the anchor clamps curved in tracks so that anchor clamps pusher pressurized from basic V-arrangement profile to basic planar profile.
In another one exemplary embodiment, the surgical clip applier that is provided has the parts that prevent that anchor clamps from dropping out between deformation phases.In an one exemplary embodiment, a kind of improved endoscopic surgical clip applier is provided, this applicator has: the closed together jaw near tissue to be clamped, be suitable for the push rod of closed jaw, be suitable for activating the trigger of push rod and during closed stroke, be suitable for the ratch mechanism that prevents that trigger from opening to small part.At push rod with push rod is connected to forms the preload fastener between the connector of trigger, during closed stroke when trigger partially opens, the preload fastener can keep the part make position of jaw in basic fixed effectively, to remain on the partially-formed anchor clamps between the jaw.The preload fastener is suitable for push rod is remained on the position of basic fixed, and allows the connector proximal motion.
The preload fastener has multiple structure, but in one embodiment, the preload fastener is a biasing member, and during closed stroke, it is suitable for by the push rod compression, and when trigger partially opened, it was suitable for biasing force is applied to push rod.Biasing member can be for example cantilever beam or spring.In an one exemplary embodiment, the near-end of push rod and biasing member are arranged in the groove that is formed in the coupling mechanism, and cantilever beam or the spring near-end of bias voltage push rod distad.Groove also comprises the convex ridge that is formed at wherein selectively, and during closed stroke when spring is compressed, this convex ridge is suitable for spring is remained on basicly stable load.Convex ridge is suitable for also preventing that spring from being compressed fully.
In another one exemplary embodiment, the surgical clip applier that is provided has: have from the handle of the axle of its extension, be formed on the jaw of this far-end,, be suitable for activating the trigger of jaw close mechanism with closed jaw from the jaw close mechanism that this bar extends through and is connected with jaw.Form the preload fastener between jaw close mechanism and trigger, when trigger partially opened, this preload fastener was configured to prevent that anchor clamps from dropping out from jaw during closed stroke.In one embodiment, the preload fastener can be a spring, and during closed stroke, this spring is suitable for being compressed by part jaw close mechanism.Spring is formed by for example Nitinol.In another embodiment, the preload fastener can be arranged in the groove that is formed in the coupling mechanism.During closed stroke, the preload fastener is suitable for being compressed by push rod.
In others, the surgical clip applier that is provided has: shell, from shell distad extend the axle, be formed on first and second jaws of this far-end, with the trigger that shell movably is connected, be suitable for during closed stroke, when trigger unclamps, engaging the anti-retrogression mechanism of trigger to small part.The assembly that is connected between trigger and the jaw is suitable for dropping out to prevent anchor clamps when trigger unclamps jaw being remained on fixed basically position to small part during the closed stroke.
In an one exemplary embodiment, described assembly comprises the preload fastener that is formed at wherein, is used for the part assembly is remained on the fixed position and allow part assembly proximal motion during the closed stroke to small part when trigger unclamps.In some respects, the preload fastener is formed between push rod and the coupling mechanism, and described push rod is suitable for advancing cam to cross jaw with closed jaw, and described coupling mechanism is used for push rod is connected to trigger.The preload fastener remains on push rod the fixed position and allow the coupling mechanism proximal motion during the closed stroke to small part when trigger unclamps.In some one exemplary embodiment, the preload fastener is the spring that is arranged between push rod and the coupling mechanism.
The present invention also provides exemplary technique, is used for anchor clamps are aimed at the relative jaw that is formed on the surgical clip applier far-end, and is preferably used for keeping during anchor clamps form anchor clamps to aim at relative jaw.In an one exemplary embodiment, the surgical clip applier that is provided has the axle that has near-end and far-end, be formed on the axle far-end on relative jaw and guiding elements, described guiding elements is connected with jaw and has a formation aligning guide thereon, this guiding elements is suitable for guide clamp and enters opposed jaws, and this guiding elements keeps anchor clamps to aim at opposed jaws when the relative lower limb of anchor clamps is closed.This aligning guide also be suitable for being resisted against be formed between the relative jaw to the lower surface of small part anchor clamps, with restriction or prevent clip vertical motion, that is, summit and lower limb pivot along the vertical direction.
Aligning guide can be formed on the various piece of clip applier, but in an one exemplary embodiment, guiding elements is a tissue stop, and this tissue stop has far-end, and this far-end has and is formed at the groove that is used for fixing vascular in it.Aligning guide is from the outstanding ramp member of the upper surface of tissue stop.In an one exemplary embodiment, ramp member in height increases to far-end from the near-end of tissue stop.
In another one exemplary embodiment, the surgical clip applier that is provided has axle, be formed on this far-end and be suitable for together closed, movably be connected with axle and be suitable for advancing anchor clamps to enter the anchor clamps propulsion assembly of opposed jaws so that near the opposed jaws of tissue to be clamped.The propeller guide just is arranged in the nearside of opposed jaws and is suitable for guiding and enters opposed jaws by the propulsive anchor clamps of anchor clamps propulsion assembly.The propeller guide is suitable for anchor clamps are aimed at opposed jaws.The clip vertical that the propeller guide also is suitable for limiting or preventing to be formed between the relative jaw is moved.
In some one exemplary embodiment, the propeller guide is formed on the tissue stop that connects with relative jaw, and this tissue stop has the groove that is formed in its distal end, and this groove is suitable for holding therein tissue.But the form of propeller guide ramp member protrudes on the upper surface of tissue stop.
In others, a kind of improved endoscopic surgical clip applier is provided, have: closed together so that the jaw of tissue close to be clamped; And be suitable for advancing continuously a plurality of anchor clamps to enter the anchor clamps propulsion assembly of jaw.The inclined-plane guiding elements just is positioned the nearside of opposed jaws, and is suitable for aligning and guides entering opposed jaws by the propulsive anchor clamps of anchor clamps propulsion assembly, and is suitable for limiting or preventing when forming anchor clamps between the jaw relatively moving both vertically of anchor clamps.In an one exemplary embodiment, the inclined-plane guiding elements is formed on the tissue stop that connects with relative jaw, and tissue stop comprises distal end, is suitable for holding therein tissue, with aligning tissue and jaw to be clamped.In some one exemplary embodiment, the inclined-plane guiding elements in height increases to far-end from its near-end.This inclined-plane guiding elements is suitable for being resisted against the lower surface to the small part anchor clamps that is formed between the relative jaw, to limit or to prevent the clip vertical motion, that is, and summit and lower limb pivot along the vertical direction.In an one exemplary embodiment, the inclined-plane guiding elements has about 0.025 " maximum height, and/or the angle that the inclined-plane guiding elements tilts is in about 5 ° to 45 ° scope.
More particularly, the present invention relates to following content:
(1) a kind of improved endoscopic surgical clip applier, this applicator have together closed jaw near tissue to be clamped, and have and be suitable for a plurality of anchor clamps are advanced to anchor clamps propulsion assembly in the described jaw continuously, it is characterized in that:
The part of anchor clamps propulsion assembly comprises pusher mechanism, this arrangement of mechanism also can be to the jaw motion to be advanced to a plurality of anchor clamps in the jaw continuously in the anchor clamps track, described pusher mechanism is suitable for producing frictional force with the anchor clamps track, to prevent the by mistake motion of this pusher mechanism in the anchor clamps track, and activated when distad promoting pusher mechanism when the anchor clamps propulsion assembly, described pusher mechanism is suitable for motion.
(2) as (1) described endoscopic surgical clip applier, wherein, described pusher mechanism comprises formed thereon and contacts with the anchor clamps track to produce the projection of frictional force with the anchor clamps track.
(3) as (1) described endoscopic surgical clip applier, wherein, described pusher mechanism comprises that formed thereon and bias voltage anchor clamps track is to produce the flexible tang of frictional force with the anchor clamps track.
(4) as (3) described endoscopic surgical clip applier, wherein, described flexible tang comprises that formation and be suitable for engaging the flange that is formed on the respective ridges in the anchor clamps track thereon.
(5) as (1) described endoscopic surgical clip applier, wherein, described pusher mechanism has cantilever structure, to produce frictional force with the anchor clamps track.
(6) as (1) described endoscopic surgical clip applier, wherein, described anchor clamps track comprises the stayed surface that has along the opposing sidewalls of its extension, and described pusher mechanism is arranged between the opposing sidewalls slidably.
(7) as (6) described endoscopic surgical clip applier, wherein, described opposing sidewalls is advanced to be essentially in the cross section of V-arrangement with the pusher mechanism bias voltage.
(8) a kind of surgical clip applier comprises:
Have the shell of the trigger that movably is connected thereto and the axle that extends from described shell, this has the opposed jaws that is formed on its far-end;
The anchor clamps track, it passes described axle extension and is suitable for keeping a plurality of anchor clamps; And
The feeding shoe, it is arranged in the anchor clamps track slidably and is suitable for advancing a plurality of anchor clamps by the anchor clamps track, and this feeding shoe is configured to produce frictional force with the anchor clamps track, thereby stops the feeding shoe by mistake to move.
(9) as (8) described surgical clip applier, wherein, described feeding shoe comprises that at least one is formed thereon and contacts with the anchor clamps track to produce the projection of frictional force with the anchor clamps track.
(10) as (8) described surgical clip applier, wherein, described feeding shoe comprises that formed thereon and bias voltage anchor clamps track is to produce the flexible tang of frictional force with the anchor clamps track.
(11) as (10) described surgical clip applier, wherein, flexible tang comprises that formation and be suitable for engaging the flange that is formed on the respective ridges in the anchor clamps track thereon.
(12) as (10) described surgical clip applier, wherein, described anchor clamps track comprises that at least one is formed thereon and is suitable for engaging the protrusion of surface of the flexible tang on the feeding shoe.
(13) as (8) described surgical clip applier, wherein, described feeding shoe has cantilever structure, to produce frictional force with the anchor clamps track.
(14) as (8) described surgical clip applier, wherein, described anchor clamps track comprises the stayed surface that has along its extension opposing sidewalls, and described feeding shoe is arranged between the opposing sidewalls slidably.
(15) as (14) described surgical clip applier, wherein, described opposing sidewalls is advanced to be essentially in the cross section of V-arrangement with feeding shoe bias voltage.
(16) a kind of surgical clip applier comprises:
Shell;
Axle from described shell extension;
Be formed on the far-end of described axle and be suitable for holding betwixt first and second jaws of tissue;
Extend through described axle and be suitable for keeping the anchor clamps track of a plurality of anchor clamps; And
The anchor clamps pusher, it is arranged in the anchor clamps track and is suitable for promoting a plurality of anchor clamps by the anchor clamps track and enter first and second jaws, this anchor clamps pusher is subjected to bias voltage in the anchor clamps track, thereby prevent the motion of described anchor clamps pusher, up to the power on the anchor clamps pusher of being applied to greater than the biasing force that between anchor clamps pusher and anchor clamps track, produces.
(17) as (16) described surgical clip applier, wherein, described anchor clamps pusher comprises that formation and be suitable for the bias mechanism of bias voltage anchor clamps pusher in the anchor clamps track thereon.
(18) as (17) described surgical clip applier, wherein, described bias mechanism comprises the projection that is formed on the described anchor clamps pusher.
(19) as (17) described surgical clip applier, wherein, described bias mechanism comprises the flexible tang that is formed on the anchor clamps pusher.
(20) as (16) described surgical clip applier, wherein, the width of described anchor clamps pusher is greater than the width of anchor clamps track, thereby makes the anchor clamps pusher be subjected to bias voltage in the anchor clamps track.
(21) as (16) described surgical clip applier, wherein, the size of described anchor clamps track is configured to make the distortion of anchor clamps pusher, to produce biasing force between anchor clamps track and anchor clamps pusher.
(22) as (16) described surgical clip applier, wherein, described anchor clamps pusher is bent to flat basically appearance profile by the anchor clamps track from the appearance profile of V-arrangement basically.
Description of drawings
From understanding, wherein below in conjunction with having more fully the present invention the detailed description of accompanying drawing:
Figure 1A is the side view of the one exemplary embodiment of surgical clip applier;
Figure 1B is the exploded view of surgical clip applier shown in Figure 1A;
Fig. 2 A is the vertical view of the jaw keeper assembly of surgical clip applier shown in Figure 1A;
Fig. 2 B is the upward view of the assembly of jaw keeper shown in Fig. 2 A;
Fig. 2 C is the side view of the assembly of jaw keeper shown in Fig. 2 B;
Fig. 2 D is the cross-sectional view along jaw keeper assembly shown in Fig. 2 C of line D-D intercepting;
Fig. 3 A is the vertical view of the feeding shoe that uses with the assembly of jaw keeper shown in Fig. 2 A-2D;
Fig. 3 B is the upward view of feeding shoe shown in Fig. 3 A;
Fig. 4 A is configured to advance feeding shoe shown in Fig. 3 A and the 3B by the side perspective of the feed bar of jaw keeper assembly shown in Fig. 2 A-2D;
Fig. 4 B is the side view of the far-end of jaw keeper axle shown in feed bar near-end shown in Fig. 4 A and Fig. 2 A and the 2B, shows the feed bar at nearest side position;
Fig. 4 C is the side view of feed bar shown in Fig. 4 B and jaw keeper axle, shows the feed bar in the farthest side position;
Fig. 4 D is the side view with another embodiment of the feed bar near-end shown in the near-end of the axle of jaw keeper shown in Fig. 2 A and the 2B, shows the feed bar at nearest side position;
Fig. 4 E is the side view of feed bar shown in Fig. 4 D and jaw keeper axle, shows the feed bar in the farthest side position;
Fig. 4 F is the side view with another embodiment of the feed bar near-end shown in the near-end of the axle of jaw keeper shown in Fig. 2 A and the 2B, shows the feed bar at nearest side position;
Fig. 4 G is the side view of feed bar shown in Fig. 4 F and jaw keeper axle, shows the feed bar in the centre position;
Fig. 4 H is the side view of feed bar shown in Fig. 4 F and jaw keeper axle, shows the feed bar in the farthest side position;
Fig. 5 A is configured to the angle of rake side perspective that is connected with the far-end of feed bar shown in Fig. 4 A;
Fig. 5 B is the side perspective that is configured to angle of rake another embodiment that is connected with the far-end of feed bar shown in Fig. 4 A;
Fig. 6 A is the cross-sectional view of anchor clamps propulsion assembly, comprising the assembly of jaw keeper shown in Fig. 2 A-2D, and feeding shoe shown in Fig. 3 A and the 3B, and the anchor clamps track that is in shown in Fig. 4 A with respect to jaw keeper assembly is the feed bar of initial proximal position;
Fig. 6 B is the cross-sectional view of anchor clamps propulsion assembly shown in Fig. 6 A, shows the feed bar of distal direction motion;
Fig. 6 C is the cross-sectional view of anchor clamps propulsion assembly shown in Fig. 6 B, shows the further distal motion of feed bar, thus distal direction motion feeding shoe and the anchor clamps supply that is arranged in feeding shoe distally;
Fig. 6 D is the cross-sectional view of anchor clamps propulsion assembly shown in Fig. 6 C, and the feed bar of getting back to initial proximal position shown in Fig. 6 A is shown, and feeding shoe and anchor clamps supply are still in the propelling position shown in Fig. 6 C simultaneously;
Fig. 6 E is an angle of rake face upwarding view shown in Fig. 5 A, and this propeller is arranged in the anchor clamps track of the assembly of jaw keeper shown in Fig. 2 A-2D, wherein is illustrated in the propeller of nearest side position;
Fig. 6 F is an angle of rake face upwarding view shown in the 6E, shows anchor clamps are advanced to the propeller that is in the farthest side position behind the jaw of surgical clip applier;
Fig. 7 is the side perspective of a pair of jaw of surgical clip applier shown in Figure 1A;
Fig. 8 is the side perspective of the cam that uses with jaw shown in Figure 7;
Fig. 9 is that push rod is suitable for being connected to be used to make the birds-eye perspective of cam with respect to jaw motion shown in Figure 7 with cam shown in Figure 8;
Figure 10 A is the vertical view that is connected to the cam shown in Figure 8 of jaw shown in Figure 7, shows the cam and the open jaw that are in initial position;
Figure 10 B is the vertical view that is connected to the cam shown in Figure 8 of jaw shown in Figure 7, shows cam that is advanced to the jaw top and the jaw that is in the close position;
Figure 11 A is the birds-eye perspective of tissue stop, and this stop part is suitable for being connected with the far-end of the anchor clamps track of the assembly of jaw keeper shown in Fig. 2 A-2D;
Figure 11 B is the birds-eye perspective of another embodiment of tissue stop, is formed with the inclined-plane on this stop part, is used for the anchor clamps guiding is entered jaw and firm anchor clamps during anchor clamps form;
Figure 11 C is the side view of the tissue stop shown in Figure 11 B;
Figure 11 D is the zoomed-in view of the tissue stop shown in Figure 11 B and Figure 11 C;
Figure 12 is the birds-eye perspective of the far-end of surgical clip applier shown in Figure 1A, shows the tissue stop shown in Figure 11 A between jaw shown in Figure 7;
Figure 13 is the partially cut-away side view of the handle portion of surgical clip applier shown in Figure 1A;
Figure 14 is the side perspective of the trigger insert of surgical clip applier shown in Figure 1A;
Figure 15 A is half a side perspective of the feed bar coupling of surgical clip applier shown in Figure 1A;
Figure 15 B is second half a side perspective of the feed bar coupling shown in Figure 15 A;
Figure 16 is the birds-eye perspective that forms the flexible link of the anchor clamps propulsion assembly of surgical clip applier shown in part Figure 1A;
Figure 17 A is the partially cut-away side view of the handle portion of surgical clip applier shown in Figure 1A, shows the anchor clamps propulsion assembly that is in initial position;
Figure 17 B is the partially cut-away side view of surgical clip applier handle portion shown in Figure 17 A, and the anchor clamps propulsion assembly that part activates is shown;
Figure 17 C is the partially cut-away side view of surgical clip applier handle portion shown in Figure 17 B, shows the anchor clamps propulsion assembly that activates fully;
Figure 17 D is the partially cut-away side view of surgical clip applier handle portion shown in Figure 17 A, shows the anchor clamps propulsion assembly that has activated;
Figure 18 is the side view that forms the formation closed connecting rod roller partly of assembly as the anchor clamps of surgical clip applier shown in Figure 1A;
Figure 19 is connected the birds-eye perspective that forms the closed connecting rod of assembly with the part anchor clamps that form surgical clip applier shown in Figure 1A with closed connecting rod roller shown in Figure 180;
Figure 20 A is the birds-eye perspective of closed link linkage, and it is connected and forms the part anchor clamps formation assembly of surgical clip applier shown in Figure 1A with closed connecting rod shown in Figure 19;
The upward view of closed link linkage shows the embodiment that is furnished with biasing member therein shown in Figure 20 A that Figure 20 B is with push rod shown in Figure 9 is connected;
The upward view of closed connecting rod shown in Figure 20 A that Figure 20 C is with push rod shown in Figure 9 is connected shows another embodiment that is furnished with biasing member therein;
Figure 20 D is the chart of the size of the required power of biasing member shown in mobile Figure 20 B;
Figure 20 E is the side view with another embodiment of the closed link linkage that is formed on convex ridge wherein;
Figure 21 A is the amplification birds-eye perspective of the anti-retrogression mechanism (anti-backupmechanism) of surgical clip applier shown in Figure 1A;
Figure 21 B is the perspective view of the detent mechanism of anti-retrogression mechanism shown in Figure 21 A;
Figure 22 A is the partially cut-away side view of the part handle of surgical clip applier shown in Figure 1A, shows the anti-retrogression mechanism at initial position;
Figure 22 B is the partially cut-away side view of the part handle of surgical clip applier shown in Figure 22 A, shows the anti-retrogression mechanism that part activates;
Figure 22 C is the partially cut-away side view of the part handle of surgical clip applier shown in Figure 22 B, and the anti-retrogression mechanism that activates fully is shown;
Figure 22 D is the partially cut-away side view of the part handle of surgical clip applier shown in Figure 22 C, shows anti-retrogression mechanism and is just returning initial position;
Figure 22 E is the partially cut-away side view of the part handle of surgical clip applier shown in Figure 22 D, shows anti-retrogression mechanism and has got back to initial position;
Figure 23 A is the cutaway view of the overload mechanism of surgical clip applier shown in Figure 1A;
Figure 23 B is the phantom of the mechanism of overload shown in Figure 23 A, shows closed connecting rod roller and at first contacts with the aerofoil profile connecting rod;
Figure 23 C is the phantom of the mechanism of overload shown in Figure 23 B, shows closed connecting rod roller and the aerofoil profile connecting rod is applied power causes the aerofoil profile connecting rod to pivot.
Figure 23 D is the perspective view of another embodiment of the overload mechanism that uses with surgical clip applier;
Figure 24 A is the side perspective of the anchor clamps amount indicator wheel of the surgical clip applier shown in Figure 1A;
Figure 24 B is the side view of the anchor clamps amount indicator wheel shown in Figure 24 A;
Figure 25 is the birds-eye perspective of the anchor clamps amount actuator that uses with anchor clamps amount indicator wheel shown in Figure 24;
Figure 26 A is the partially cut-away side view of the part handle of surgical clip applier shown in Figure 1A, shows the motion of the anchor clamps amount indicator wheel of the anchor clamps amount actuator of Figure 25 and Figure 24;
Figure 26 B is the partially cut-away side view of the part handle of surgical clip applier shown in Figure 26 A, shows the further motion of the anchor clamps amount indicator wheel of the anchor clamps amount actuator of Figure 25 and Figure 24.
Figure 27 A shows the side view of another embodiment of feeding shoe, and this feeding shoe has and is formed on being pre-formed as A shape and constituting the bending section that causes frictional force between feeding shoe and anchor clamps track wherein;
Figure 27 B shows the side view of another embodiment of feeding shoe, and this feeding shoe has and is formed on being pre-formed as V-arrangement and constituting the bending section that causes frictional force between feeding shoe and anchor clamps track wherein;
Figure 28 A is the birds-eye perspective of part anchor clamps track, and it has and is formed on protrusion of surface wherein and that constitute and cause between the feeding shoe in accordance with another embodiment of the present invention frictional force;
Figure 28 B is the end perspective view of another embodiment of feeding shoe, and this feeding shoe has formation tang and that be suitable for engaging the protrusion of surface in the anchor clamps track that is formed on Figure 28 A thereon;
Figure 29 A is the bottom perspective view of another embodiment of feeding shoe, has the stop lug that is formed on the tang, and this stop lug is suitable for engaging the respective slot that is formed on the feed bar;
Figure 29 B is the birds-eye perspective of another embodiment of feed bar, this feed bar have formation within it catch groove, this is caught groove and is suitable for being engaged by the stop lug on the tang that is formed on the feeding shoe shown in Figure 29 A; And
Figure 29 C is arranged in the feed bar of Figure 29 B and the sectional view of feeding shoe shown in Figure 29 A that engages.
The specific embodiment
The present invention generally speaking provides surgical clip applier and uses surgical clip applier method to dispensing surgical clips such as blood vessel, vascular, isocons in surgical procedures.Exemplary surgical clip applier comprises the multiple parts of being convenient to discharge surgical clip, as described here with shown in the drawings.Yet, it will be understood by those skilled in the art that surgical clip applier can include only some in these parts and/or can comprise multiple other parts known in the art.Surgical clip applier described here only is used to the embodiment that represents that some is exemplary.
Figure 1A illustrates exemplary surgical clip applier 10.Go out as shown, but clip applier 10 generally includes shell 12 with fixed handle 14 and fixed handle or the trigger 16 pivotally connected with shell 12.Slender axles 18 stretch out from shell 12, and these slender axles 18 comprise a pair of relative jaw 20 that is formed on its far-end, are used to make the surgical clip crimp.Slender axles 18 rotatably are connected with shell 12, and these slender axles 18 comprise the knob 22 that is used for opposite shell 12 rotating shafts 18.Figure 1B illustrates the exploded view of surgical clip applier shown in Figure 1A 10, and multiple parts are more detailed description below.
Fig. 2 A-12 illustrates the one exemplary embodiment of axle 18 the multiple parts of surgical clip applier 10.Generally speaking, with reference to Figure 1B, axle 18 comprises the outer tube 24 that holds spindle unit, and described spindle unit can comprise jaw keeper assembly 26, and it has carrying jig track 30 and forms the jaw keeper axle 28 of push rod passage 32 thereon.Jaw 20 is constituted as with the far-end of anchor clamps track 30 and cooperates.Shaft assembly 18 also can comprise the anchor clamps propulsion assembly, and this anchor clamps propulsion assembly comprises in an one exemplary embodiment: feeding shoe 34, and it is suitable for being arranged in slidably in the anchor clamps track 30 with propelling and is positioned at wherein a succession of anchor clamps 36; Feed bar 38, it is suitable for driving feeding shoe 34 by anchor clamps track 30.Feed bar 38 can comprise propulsion component 40, and it is suitable for cooperating with the anchor clamps propelling jaw 20 with distal-most end with feed bar 38 far-ends.Shaft assembly 18 can comprise that also anchor clamps are shaped or cam pack, and in an one exemplary embodiment, these anchor clamps are shaped or cam pack comprises: cam 42, and it is suitable for cooperating with jaw 20 slidably; Push rod 44, it can connect with relative jaw 20 motion cam 42 with cam 42.Shaft assembly also can comprise tissue stop 46, and it can cooperate with the far-end of anchor clamps track 30, so that surgical site is located jaw 20 relatively.
A kind of multiple parts of exemplary anchor clamps propulsion assembly illustrate in greater detail in Fig. 2 A-5.At first with reference to Fig. 2 A-2D, shown jaw keeps assembly 26 to comprise elongated, flat jaw keeper axle 28 basically, the far-end 28b that it has the near-end 28a that cooperates with outer tube 24 and is suitable for cooperating with jaw 20.Although can use multiple technologies that the near-end 28a of jaw keeper axle 28 is cooperated with outer tube 24, in shown embodiment, near-end 28a comprises: in the teeth 31 that its opposite side forms, it is suitable for being accommodated in the respective aperture or opening (not shown) that is formed in the outer tube 24; Form otch 29 within it, allow the opposite side deflection of near-end 28a or form a spring.Particularly, when jaw keeper axle 28 inserted outer tube 24, the opposite side of the near-end 28a of otch 29 permission jaw keeper axles 28 was towards extruding each other.In case the respective openings that teeth 31 are aimed in the outer tube 24, the near-end 28a of jaw keeper axle 28 will return its initial not pressure texture, make teeth 31 extend into respective openings to engage outer tube 24 thus.As narrating in more detail below with reference to figure 4A, described device also comprises parts as described below, these parts are used to prevent the opposite side extruding of the near-end 28a of jaw keeper axle 28 between the device operating period, thereby prevent that the teeth 31 and the accident of outer tube 24 break away from.
Can also use multiple technologies that the far-end 28b of jaw keeper axle 28 is cooperated with jaw 20, but in the illustrated embodiment, the far-end 28b of jaw keeper axle 28 comprises that several are formed at wherein otch or teeth 78, in order to be formed on jaw 20 on complementary protuberance or teeth 94 cooperate, will narrate in more detail with reference to figure 7 below.The portions of proximal that teeth 78 allow jaws 20 basically with jaw keeper axle 28 coplanes.
Jaw keeps assembly 26 also to comprise push rod passage 32 formed thereon, is used for receiving slidably being used to the push rod 44 that advances cam 42 to cross jaw 20, as below narrating in more detail.Can use multiple technologies to form push rod passage 32, and the shape and size that it had depend on the shape and size of push rod 44.Shown in Fig. 2 D, with push rod passage 32 usefulness for example welding be fixedly connected to the upper surface of keeper axle 28, and it has and is essentially orthogonal shape and the passage 32a that wherein extends is passed in qualification.Push rod passage 32 also can extend along whole or part keeper axle 28.Those skilled in the art should be appreciated that jaw keeps assembly 26 needn't comprise push rod passage 32 usefulness so that the motion of push rod 44 in the slender axles 18 of surgical clip applier 10.
Further shown in Fig. 2 A-2D, jaw keeps assembly 26 also to comprise the anchor clamps track 30 that is mated or forms thereon.Shown anchor clamps track 30 cooperates with the lower surface of keeper axle 28, and it distad extends beyond the far-end 28b of jaw keeper axle 28, to allow the far-end 30b and jaw 20 substantial registration of anchor clamps track 30.In use, anchor clamps track 30 is constituted as and settles at least one therein, is preferably a succession of anchor clamps.Thus, anchor clamps track 30 comprises relative guide rail 80a, 80b, and it is suitable for settling therein the relative lower limb of one or more anchor clamps, so that clip legs is aligned with each other vertically.In an exemplary embodiment, the anchor clamps track 30 of formation is settled about 20 anchor clamps that are arranged in advance in the anchor clamps track 30 when producing.Those skilled in the art should be appreciated that the shape of anchor clamps track 30, size and structure can change according to shape, size and structure or other closing device (as nail) that can be suitable for being received in wherein of anchor clamps.In addition, can use other different technology generation to come the anchor clamps feeder of clamping with slender axles 18 for anchor clamps track 30.
Anchor clamps track 30 also comprises the several openings 30c that is formed in it, is used to receive the tang 82a that is formed on the feeding shoe 34 that is suitable for being arranged in the anchor clamps track 30, as below narrating in more detail.In an exemplary embodiment, anchor clamps track 30 comprises some opening 30c, and the number of this opening 30c is consistent with the anchor clamps number that is suitable for being arranged in advance in the device 10 and discharge in use at least.Opening 30c preferably is equidistant each other, and the tang 82a when guaranteeing each push feed shoe 34 on the feeding shoe 34 engages with opening 30c.Though not shown, anchor clamps track 30 can comprise locating slot rather than opening 30c, or it can comprise that other parts engage and prevent the distal motion of feeding shoe 34 and allow its proximal motion with feeding shoe 34 to allow anchor clamps track 30.Anchor clamps track 30 also comprises backstop tang 118 formed thereon, shown in Fig. 2 B, this backstop tang 118 can be engaged to prevent that 34 motions of feeding shoe from exceeding the position of farthest side, will be described herein in more detail as following by the respective stopping tang that forms on feeding shoe 34 effectively.Backstop tang 118 can have different structure, but it is the form of the contact pin of two vicinities in an exemplary embodiment, and described contact pin is extended each other, with closing section anchor clamps track, thereby allows anchor clamps to pass through.
Shown exemplary feeding shoe 34 more in detail in Fig. 3 A and 3B, and it is suitable for directly driving anchor clamps by anchor clamps track 30.Though feeding shoe 34 can have different structures and can use other different technology to drive anchor clamps by anchor clamps track 30, in an exemplary embodiment, feeding shoe 34 is for having the elongated shape of near-end 34a and far-end 34b.Far-end 34b can be suitable for the anchor clamps of nearside in anchor clamps track 30 are propped up to promote anchor clamps by anchor clamps track 30.In the one exemplary embodiment that illustrates, far-end 34b is V-arrangement basically, is used to settle the v-shaped bending part of anchor clamps.Far-end 34b also comprises the rectangular notch 34c that is formed at wherein, is used for allowing propeller 40 joint farthest side anchor clamps and it is advanced jaw 20, will be described herein in more detail as following.Certainly far-end 34b can change according to the structure of anchor clamps or other close mechanism that uses with device 10.
In another one exemplary embodiment, feeding shoe 34 can also comprise the parts of being convenient to the distal motion of feeding shoe 34 in anchor clamps track 30 and preventing the proximal motion of feeding shoe 34 in anchor clamps track 30 basically.Such structure is guaranteed the propelling of anchor clamps in anchor clamps track 30 and is suitably located, thereby permission is advanced to the anchor clamps of farthest side between the jaw 20 when trigger 16 each actuatings, will be described herein in more detail as following.In the one exemplary embodiment that illustrates, feeding shoe 34 comprises tang 82a, and this tang 82a is formed on the last also proximad of its upper surface 34s at angle, is used to engage one of them the opening 30c that is formed in the anchor clamps track 30.In use, the angle of tang 82a allows feeding shoe 34 distad to slide in anchor clamps track 30.Each push feed shoe 34, tang 82a distad move to next opening 30c from anchor clamps track 30 interior opening 30c.The engaging of opening 30c in tang 82a and the anchor clamps track 30 prevents feeding shoe 34 proximal motion and returns former position, will be described herein in more detail as following.
Motion for the ease of feeding shoe 34 proximad in anchor clamps track 30, feeding shoe 34 comprises the tang 82b that is formed on its lower surface 34i, shown in Fig. 3 B, be used for allowing when feed bar 38 distal motion, to engage feeding shoe 34 by feed bar 38 (Fig. 4 A).But following tang 82b and last tang 82a are similar at its proximad aspect at angle.In use, each feed bar 38 distal motion, the locating slot 84 that is formed in the feed bar 38 engages and makes feeding shoe 34 distal motion one preset distance in anchor clamps track 30 with following tang 82b.Then but proximal motion feed bar 38 makes it return its initial position, and the angle of tang 82b allows tang 82b to slide into the next locating slot 84 that is formed in the feed bar 38 down.As previously explained, can not use tang 82a, 82b and opening 30c or locating slot 84 and use multiple other parts to control the motion of feeding shoe 34 in anchor clamps track 30.
As mentioned previously, feeding shoe 34 also can comprise stop part formed thereon, and when feeding shoe 34 did not have anchor clamps in the farthest side position and in device 10, this stop part was suitable for blocking the motion of feeding shoe 34.Stop part can have multiple structure, and Fig. 3 A and 3B illustrate the 3rd tang 82c that is formed on the feeding shoe 34, and the 3rd tang 82c extends along downward direction, is used to engage the backstop tang 118 (Fig. 2 B) that is formed on the anchor clamps track 30.Location the 3rd tang 82c like this, when feeding shoe 34 during in the farthest side position, this tang is bonded on the backstop tang 118 on the anchor clamps track 30, prevents motion when anchor clamps feeder feeding shoe 34 and feed bar 38 during with sky with this.
Fig. 4 A illustrates exemplary feed bar 38, is used to drive feeding shoe 34 keeps assembly 26 by jaw anchor clamps track 30.As shown, feed bar 38 has the roughly elongated shape that has near-end 38a and far-end 38b.The near-end 38a of feed bar 38 can be suitable for cooperating (Figure 1B) with feed bar coupling 50, and this will be described in greater detail below.Feed bar coupling 50 cooperates with feeding connecting rod 52, and when trigger 16 activated, feeding connecting rod 52 can make feed bar 38 move slidably along distal direction in slender axles 18 effectively.The near-end 38b of feed bar 38 can be suitable for cooperating with propeller 40,40 ', shown in the one exemplary embodiment shown in Fig. 5 A and 5B, its effectively the farthest side anchor clamps of drive arrangement in anchor clamps track 30 enter jaw 20, this will be described in greater detail below.
As mentioned previously, the near-end 38b of feed bar 38 can comprise as lower member, and these parts prevent the extruding (Fig. 2 A and 2B) of opposite side of the near-end 28a of jaw keeper axle 28 in the device use, thereby prevent that the teeth 31 and the accident of outer tube 24 break away from.In an exemplary embodiment, shown in Fig. 4 A-4C, the near-end 38a of feed bar 38 can comprise projection formed thereon 39, and it is suitable for stretching into the opening 29 in the near-end 28a that is formed on jaw keeper axle 28.When feed bar 38 when nearest side position (that is, when trigger 16 during) in deployed position, projection 39 is positioned at the near-end of opening 29, shown in Fig. 4 B, allow the near-end 28a of jaw keeper axle 28 to push, slip into outer tube 24 to allow axle 28.When feed bar 38 in the farthest side position when (that is, when trigger 16 the time) to the position of small part closure, projection 39 is positioned at the centre position of contiguous teeth 31, shown in Fig. 4 C, with the extruding of the near-end 28a that prevents jaw keeper axle 28.This is advantageous particularly in the device use, and projection 39 prevents that the accident of jaw keeper axle 28 and outer tube 24 breaks away between the device operating period.Although the projection 39 shown in Fig. 4 A-4C has the rectangular cross-sectional shape that has round edge, projection 39 can have multiple other shape and size.For example, shown in Fig. 4 D and 4E, projection 39 ' has the similar leg-of-mutton cross sectional shape that has tapering point, and it can be suitable for extending between the teeth 31 and not be extruded with the near-end 28a that further guarantees jaw keeper axle 28 in the device use.Also can use projection more than one.For example, another embodiment shown in Fig. 4 F-4H, wherein the near-end 38a ' of feed bar 38 can comprise formed thereon and apart two projection 39a, 39b.Shown in Fig. 4 F when feed bar 38 during at nearest side position, and shown in Fig. 4 H when feed bar 38 during in the farthest side position, two projection 39a, 39b can prevent the extruding of the near-end 28a of jaw keeper axle 28.The extruding of the near-end 28a of jaw keeper axle 28 only occurs in shown in Fig. 4 G when feed bar 38 and is positioned at projection 39a in centre position teeth 31, in the time of between the 39b.
Also as mentioned previously, feed bar 38 can comprise formation locating slot 84 within it, be used for be formed on feeding shoe 34 on following tang 82b engage.The quantity of locating slot 84 is variable, but in an exemplary embodiment, the quantity of the locating slot 84 that feed bar 38 has corresponding to or greater than the quantity of anchor clamps that is suitable for by device 10 dispensings, and more preferably, it Duos a locating slot 84 than being suitable for by the quantity of the anchor clamps of device 10 dispensings.As nonrestrictive example, feed bar 38 can comprise formation 18 locating slots 84 within it, is used to discharge 17 anchor clamps that are arranged in advance in the anchor clamps track 30.Such structure allows feed bar 38 push feed shoes 340 seven times, with this 17 anchor clamps is advanced jaw 20, so that use.Locating slot 84 is also preferably equidistant each other, all can be engaged and push feed shoes 34 by feed bar 38 when guaranteeing that each feed bar 38 advances.
Feed bar 38 also can comprise following parts, and it is used to control the quantity of motion of feed bar 38 relative anchor clamps tracks 30.When such structure is guaranteed trigger 16 each actuatings feeding shoe 34 is advanced a preset distance, advance single anchor clamps to enter jaw 20 with this.Although can use the distal motion of multiple technologies control feed bar 38, but in an exemplary embodiment, feed bar 38 can comprise projection formed thereon 86, and it is suitable for being received in slidably in the corresponding slit 88 (Fig. 2 B) that is formed in the jaw keeper axle 28.The length of slit 88 can effectively limit the motion of projection 86 wherein, has so just limited the motion of feed bar 38.In view of the above, in use, feed bar 38 can slide by relative anchor clamps track 30 between fixed proximal position and fixed distal position, allows feed bar 38 that feeding shoe 34 is advanced a preset distance with this each propelling along with feed bar 38.
Fig. 5 A illustrates an one exemplary embodiment of propeller 40, and this propeller 40 is suitable for cooperating with the far-end 38b of feed bar 38, and the anchor clamps that it drives farthest side effectively enter jaw 20 from anchor clamps track 30.Although can use multiple technologies that propeller 40 is cooperated with feed bar 38, in the illustrated embodiment, the near-end 40a of propeller 40 is the form of female connector, and it is suitable for receiving the insertion adapter of the far-end 38b that is formed on feed bar 38.Propeller 40 preferably cooperates regularly with feed bar 38, however it optionally and feed bar 38 form.The far-end 40b of feed bar 38 can comprise the anchor clamps propulsive element 90 that for example forms thereon preferably suitable for the far-end 40b that anchor clamps is advanced jaw 20 and propeller 40.Anchor clamps propulsive element 90 can have multiple shape and size, but in the illustrated embodiment, it has elongated shape, has the groove 92 that is formed on its far-end, is used to settle the sweep of anchor clamps.The shape of groove 92 is had nothing in common with each other according to the concrete structure of anchor clamps.Anchor clamps propulsive element 90 relatively the longitudinal axis A of propeller 40 along upward to stretching out at a certain angle.This structure allows anchor clamps propulsive element 90 to stretch into anchor clamps track 30 with joining jig, and surplus of propeller 40 is extended with anchor clamps track 30 substantially parallelly simultaneously.Fig. 5 B illustrates another one exemplary embodiment of the anchor clamps propulsive element 90 ' of propeller 40 '.In this embodiment, the narrower a little point of anchor clamps propulsive element 90 ' and it have the little groove 92 ' that is formed on its distal-most end.In use, the anchor clamps of farthest sides and it is advanced jaw 20 in 40 joining jig tracks of propeller 30.This is the location owing to feed bar 38, and it as previously described can motion slidably between nearside and distal position.
Fig. 6 A-6G illustrates anchor clamps propulsion assembly in use, Fig. 6 A-6D is specifically shown in the motion of feed bar 38 in the anchor clamps track 30, with push feed shoe 34 and anchor clamps feeder 36, and Fig. 6 E-6F illustrates the motion of propeller 40, advances jaw 20 with the anchor clamps with farthest side.The parts in shell 12 that are used for the actuated clamps propulsion assembly will be described in greater detail below.
As shown in Figure 6A, be at nearest side position at the feed bar 38 of stop position (resting position), so that projection 86 proximads are positioned in the elongated slot 88 in the jaw keeper axle 28.Feeding shoe 34 be arranged in the anchor clamps track 30 and, suppose does not also have operative installations 10, feeding shoe 34 is at nearest side position so that on feeding shoe 34 on tang 82a and be formed on the nearside or the first opening 30c in the anchor clamps track 30 1Engage, preventing feeding shoe 34 proximal motion, and the following tang 82b on the feeding shoe 34 is positioned at first locating slot 84 in the feed bar 38 1With second locating slot 84 2Between so that by feed bar 38 along upward to this time of bias voltage tang 82b.Locating slot 84 order labels in the feed bar are 84 1, 84 2Deng, the opening 30c order label in anchor clamps track 30 is 30c 1, 30c 2Deng.Shown in Fig. 6 A was further, a succession of anchor clamps 36 order labels were 36 1, 36 2... 36 x, wherein 36 xBe the anchor clamps of farthest side, these anchor clamps 36 are positioned at and are positioned at feeding shoe 34 distally in the anchor clamps track 30.
When trigger 16 activates, distad advance feed bar 38, cause projection 86 in slit 88, distad to slide.Because feed bar 38 distal motion, the following tang 82b on the feeding shoe 34 will slip into first locating slot 84 in feed bar 38 1 In.Feed bar 38 further distal motion will cause first locating slot 84 1With engaging of following tang 82b, shown in Fig. 6 B, thus distal direction motion feeding shoe 34 and anchor clamps feeder 36 1, 36 2Deng.Shown in Fig. 6 C, during the far-end of the elongated slot 88 in projection 86 is connected to jaw keeper axle 28, prevent that feed bar 38 is to distal movement more.In this position, feeding shoe 34 has advanced a preset distance, with anchor clamps feeder 36 1, 36 2... 36 xIn anchor clamps track 30, advance preset distance.The last tang 82a of feeding shoe 34 has been advanced into the second opening 30c in anchor clamps track 30 2, preventing feeding shoe 34 proximal motion, and the following tang 82b on the feeding shoe 34 will be still by first locating slot 84 in the feed bar 38 1Engage.
Feed bar 38 is from moving to the anchor clamps 36 with farthest side in the last farthest side position shown in Fig. 6 C at the initial nearest side position shown in Fig. 6 A xBe advanced in the jaw 20.Concrete, shown in Fig. 6 E, the distal movement of feed bar 38 causes the anchor clamps propulsive element 90 and the anchor clamps 36 that are arranged in the farthest side in the anchor clamps track 30 of the propeller 40 that is connected to feed bar 38 far-ends xEngage and with anchor clamps 36 xBe advanced in the jaw 20, shown in Fig. 6 F.In an exemplary embodiment, propeller 40 will engage and begin the anchor clamps 36 of farthest side before joint and 34 propellings of beginning feeding shoe xPropelling.The result is the anchor clamps 36 of farthest side xThe distance that propulsive distance is advanced greater than feeding shoe 34.This structure only allows the anchor clamps 36 with farthest side xBe advanced into jaw 20, and other anchor clamps accident be not advanced into jaw 20.
Anchor clamps 36 xIn case partially or completely form, just discharge trigger 16 to discharge established anchor clamps 36 xThe release of trigger 16 also makes feed bar 38 along proximal direction withdrawal, gets back to initial nearest side position in slit 88 up to projection 86, shown in Fig. 6 D.When proximad withdrawal feed bar 38, feeding shoe 34 is proximal motion not, because go up tang 82a and the second opening 30c in anchor clamps track 30 2 Engage.Following tang 82b does not influence the proximal movement of feed bar 38, in case feed bar 38 just will descend tang 82b to be positioned at second locating slot 84 in the feed bar 38 at initial nearest side position as shown 2With the 3rd locating slot 84 3Between.
Repeat this step, so that another anchor clamps are advanced into jaw 20.Along with the actuating each time of trigger 16,, that is, be formed on the locating slot 84 in the feed bar 38 by next locating slot 2Engage tang 82b down, the last tang 82a distal motion of feeding shoe 34 enters next opening, that is, and and the opening 30c on anchor clamps track 30 3, the anchor clamps of farthest side are advanced in the jaw 20 and discharge.At device 10 when comprising predetermined anchor clamps amount (for example 17 anchor clamps), install 10 actuatable for 17 times.In case discharged last anchor clamps, the 3rd tang 82c on stop part, for example feeding shoe 34 can engage with the backstop tang 118 on the anchor clamps track 30, to prevent feeding shoe 34 further distal motion.
Feeding shoe 34, feed bar 38 and/or anchor clamps track 30 also can comprise and be used to prevent for example parts of motion unexpectedly or unintentionally between the delivery period of device of feeding shoe 34.This advantageous particularly because particularly before device uses for the first time the athletic meeting of feeding shoe 34 cause plant failure.For example, if feeding shoe 34 distal motion, feeding shoe 34 will advance two anchor clamps to enter jaw simultaneously, cause sending of two wrong anchor clamps that are out of shape with this.Therefore, in an exemplary embodiment, feeding shoe 34, feed bar 38 and/or anchor clamps track 30 can comprise engaging mechanism and/or be configured to produce betwixt frictional force, described frictional force is enough to retardation motion, but can be overcome by the actuating of trigger 16 to allow feed bar push feed shoe 34 by anchor clamps track 30.
Though can use multiple technologies to prevent feeding shoe 34 undesirable moving in anchor clamps track 30, Figure 27 A-29C illustrates the multiple one exemplary embodiment that is used for producing the technology of frictional force or engaging mechanism between feeding shoe 34, feed bar 38 and/or anchor clamps track 30.At first with reference to figure 27A, it is preformed cantilever or arciform structure that the feeding shoe 34 ' of shown one exemplary embodiment has when free state (promptly when feeding shoe 34 ' shifts out from anchor clamps track 30), and feeding shoe 34 ' forms cantilever spring in the time of like this in it is arranged in anchor clamps track 30.Particularly, feeding shoe 34 ' can comprise the bending section 35 ' that is formed on wherein, so that opposite end 34a ', the 34b ' of feeding shoe 34 ' are angled relative to each other.Bending section 35 ' can make the height h of feeding shoe 34 ' bHeight greater than anchor clamps track 30.Though height h bVariable, in an exemplary embodiment, the bending section 35 ' that constitutes has increased the height of feeding shoe 34 ', the amount of increasing is enough to produce the friction drag between feeding shoe 34 ' and anchor clamps track 30, but still allows feeding shoe 34 ' to slide in anchor clamps track 30 when trigger 16 activates.In an exemplary embodiment, the height increase of feeding shoe 34 ' is about at least 30%, or more preferably is about 40%.In use, anchor clamps track 30 will force feeding shoe 34 ' to become flat basically structure so that when feeding shoe 34 ' is arranged in the anchor clamps track 30 this anchor clamps track 30 of bias voltage.The terminal 34a ' of the bending section 35 ' of feeding shoe 34 ' and feeding shoe 34 ', 34b ' will apply power to anchor clamps track 30 thus, therefore produce the friction drag between feeding shoe 34 ' and anchor clamps track 30.Frictional force prevents that feeding shoe 34 ' from moving relative to anchor clamps track 30, unless trigger 16 activates, has obeyed frictional force by making every effort to overcome of applying of trigger 16 in this case.
It will be understood by those skilled in the art that bending section 35 ' can have multiple structure, and it can be formed on along the optional position of the length of feeding shoe 34 '.Bending section 35 ' is formed on the middle part of feeding shoe 34 ' or near the middle part of feeding shoe 34 ' in Figure 27 A.Bending section 35 ' also can extend in other direction.Though illustrating bending section 35 ', extends Figure 27 A in direction perpendicular to axis, so that bending section 35 ' and end 34a ', 34b ' apply power to anchor clamps track 30, but bending section 35 ' also can be selected to extend along the longitudinal axis of feeding shoe 34 ', so that feeding shoe 34 ' applies power to opposite side guide rail 80a, the 80b (Fig. 2 D) of anchor clamps track 30.Bending section 35 ' also can make opposite end 34a ', 34b ' angled along downward direction, shown in Figure 27 A, so that feeding shoe 34 ' is A shape basically, perhaps, bending section 35 ' also can make opposite end 34a ', 34b ' edge is upward to angled, shown in Figure 27 B, so that feeding shoe 34 ' is V-shaped basically.Feeding shoe 34 ' also comprises the bending section of any amount that forms in it.It will be understood by those skilled in the art that the concrete structure that to revise bending section based on the characteristic of feeding shoe 34 ' and anchor clamps track 30, to obtain the frictional force of required size between it.
Figure 28 A and Figure 28 B illustrate another embodiment that is used for producing the technology of frictional force between feeding shoe and anchor clamps track.In this embodiment, anchor clamps track 30 ' and/or feeding shoe 34 xCan comprise one or more formation protrusion of surface thereon.Shown in Figure 28 A, two protrusion of surface 82d 1, 82d 2Be formed on the anchor clamps track 30 '.Though protrusion of surface 82d 1, 82d 2Can be formed on the multiple position on the anchor clamps track 30 ', comprise the opposite side guide rail or along the whole length of anchor clamps track 30 ', or at feeding shoe 34 xMultiple position, in an illustrated embodiment, two protrusion of surface 82d 1, 82d 2The near-end of adjacent gripper track 30 ' forms and is located and for example becomes to prevent before use the initial motion of feeding shoe during transportation.Projection 82d 1, 82d 2Size can be according to preventing feeding shoe 34 xThe size of required frictional force and difference are not intended to move.
Though projection 82d 1, 82d 2Can be configured to provide and prevent feeding shoe 34 xBe not intended to the to move frictional force of required enough sizes, feeding shoe 34 xAnd/or anchor clamps track 30 ' optionally comprises the parts that are suitable for engaging corresponding protrusion of surface.Figure 28 B illustrates and is formed on feeding shoe 34 xThe tang 82e of distal part 1, 82e 2, be used for the projection 82d on the joining jig track 30 ' 1, 82d 2Tang 82e 1, 82e 2Shape and size can be different, and they can comprise constituting and engage or " catching " projection 82d 1, 82d 2Flange or other projection.Shown in Figure 28 B, tang 82e 1, 82e 2From feeding shoe 34 xOpposing sidewalls extend towards each other.
Figure 29 A-29C illustrates and is used to prevent that the feeding shoe is not intended to another embodiment of the technology of motion.In this embodiment, between feeding shoe and feed bar, produce frictional force.Particularly, the feeding shoe 34 yComprise and have formation flange 82 thereon gTang 82 f, shown in Figure 29 A, and feed bar 38 yComprise formation groove 84 within it yIn use, shown in Figure 29 C, flange 82 gConstitute engagement groove 84 y, to prevent feeding shoe 34 yBe not intended to motion.Yet, flange 82 gWith groove 84 yConstitute when activating and be applied to feeding shoe 34 by trigger 16 yAllow feeding shoe 34 when going up enough power yMotion.
It should be understood by one skilled in the art that, can use multiple other technology with prevent the feeding shoe or in the anchor clamps track other clip advancement mechanism move unintentionally, and can use any combination of parts and be located on each position of one or two parts.
Fig. 7-9 illustrates the multiple one exemplary embodiment that anchor clamps form assembly.At first with reference to the one exemplary embodiment of jaw 20 shown in Figure 7.As previously mentioned, jaw 20 can comprise portions of proximal 20a, its have be formed on jaw keeper axle 28 on the teeth 94 that cooperate of corresponding teeth 78.Yet can use other technology that jaw 20 is cooperated with jaw keeper axle 28.Can use for example dovetail connection, plug-in unit-endoporus connection etc.Perhaps, jaw 20 can form one with keeper axle 28.The distal part 20b of jaw 20 can be suitable for receiving jig betwixt, so distal part 20b can comprise first and second relative jaw member 96a, the 96b, and they can move relative to each other.In an exemplary embodiment, bias voltage jaw member 96a, 96b need exert oneself to make jaw member 96a, 96b to move towards each other to deployed position.Jaw member 96a, 96b comprise respectively and are formed at the groove (only having shown a groove 97) that is positioned in it on opposite inner face, are used for receiving and the aligned clip legs of jaw member 96a, 96b.Jaw member 96a, 96b also can comprise cam rail 98a, the 98b that is formed in it respectively, be used to allow cam 42 to engage with jaw member 96a, 96b, and jaw member 96a, 96b are moved towards each other.In an exemplary embodiment, cam rail 98a, 98b are formed on the upper surface of jaw member 96a, 96b.
Exemplary cam 42 shown in Fig. 8 is used for cooperating with jaw member 96a, 96b and engaging.Cam 42 can have multiple structure, but in the illustrated embodiment, and it comprises and be suitable for the near-end 42a (being described in greater detail below) that cooperates with push rod 44, and it also comprises and is suitable for the far-end 42b that engages with jaw member 96a, 96b.Can use multiple technologies that cam 42 is cooperated with push rod 44, but in the illustrated embodiment, cam 42 comprise the formation pass within it or the otch 100 and the insertion or the key member 102 that are suitable for receiving on the far-end 44b that is formed on push rod 44 of band keyway.Insert member 102 and in Fig. 9, show in more detail, push rod 44 has been shown among Fig. 9.As shown, inserting member 102 has with otch 100 shape corresponding shape and cooperates to allow two members 42,44.It will be understood by those skilled in the art that cam 42 and push rod 44 are formed together alternatively each other.The near-end 44a of push rod 44 can be suitable for cooperating (being described in greater detail below) with closed link assembly, is used for relative jaw 20 motion push rods 44 and cam 42.
Shown in Fig. 8 was further, cam 42 also can comprise projection 42c formed thereon, and its elongated slot 20c that are suitable for being formed in the jaw 20 receive slidably.In use, projection 42c and slit 20c are used for being formed for the proximal stop that anchor clamps form assembly.
Refer again to Fig. 8, the far-end 42b of cam 42 can be suitable for engaging with jaw member 96a, 96b.Though can use multiple technologies, in the one exemplary embodiment that illustrates, far-end 42b comprises cam channel or the conical socket 104 that is formed on wherein, is used for being received in slidably cam rail 98a, 98b on jaw member 96a, the 96b.In use, shown in Figure 10 A and 10B, cam 42 can be advanced to distal position from proximal position, the apart segment distance of jaw member 96a, 96b in proximal position, jaw member 96a, 96b location located adjacent one another and being in the close position in distal position.When advancing cam 42 to cross jaw member 96a, 96b, conical socket 104 will promote jaw member 96a, 96b towards each other, flatten the anchor clamps that are arranged in wherein with this.
As mentioned above, surgical clip applier 10 also can comprise tissue stop 46, and it can be used for being easy to the surgery location of tissue positioned in jaw 20.Figure 11 A shows the one exemplary embodiment of the tissue stop 46 with near-end 46a and far-end 46b.Near-end 46a can be suitable for cooperating with the far-end of anchor clamps track 30, is used for contiguous jaw 20 position tissue stop parts 46.But tissue stop 46 can form as one with anchor clamps track 30, or it can be suitable for cooperating with multiple other parts of axle 18 or forming as one.The far-end 46b of tissue stop 46 can have be suitable for placement catheter, vascular, isocon etc. betwixt shape with location, relative target location with aim at jaw 20.Shown in Figure 11 A, the far-end 46b of tissue stop 46 is V-arrangement substantially.Far-end 46b also has warp architecture to be easy to placing described device by the trocar or other by pipe.
The tissue stop of device or other parts also can be included in selectively and support during anchor clamps form and the parts of stationary fixture.When anchor clamps formed between jaw, anchor clamps may pivot and become misalignment.Particularly, when jaw was closed, the terminal of each lower limb of anchor clamps was moved towards each other.As a result, jaw only is bonded on the sweep on each lower limb, allows the summit of the terminal of lower limb and anchor clamps to depart from out and the aiming at of jaw like this, that is, jaw vertically pivots relatively.Being further closed of jaw can cause lopsided anchor clamps like this.In view of the above, device can comprise that as lower member it is used to make anchor clamps and jaw to aim at and guide clamp enters jaw, and is used to prevent that anchor clamps pivot or the misalignment that becomes during anchor clamps form.
Though aligning parts has multiple structure, and it can the device multiple parts on form, Figure 11 A illustrates the central tang 47 of the mid portion of the far-end 46b that is formed on tissue stop 46, is used to make anchor clamps to aim at the end of propulsion component 40.Concrete, central tang 47 can allow the summit of anchor clamps to lay along it, to prevent the misalignment that becomes of the relative propulsion component 40 of anchor clamps, these propulsion component 40 positive distal direction promotion anchor clamps.It will be understood by those skilled in the art that tissue stop 46 can have multiple other structure, and it can comprise that multiple other parts advance along it to be easy to anchor clamps.
Figure 11 B-11D illustrates has formation aligning parts thereon or another one exemplary embodiment of the tissue stop 46 ' of guiding elements, described aligning parts or guiding elements are suitable for making anchor clamps and jaw to aim at and the anchor clamps guiding are entered jaw, and more preferably are suitable for keeping during anchor clamps form anchor clamps to aim at jaw.In this embodiment, aligning parts is the form of ramp member 47 ', and it is along the central axial line longitudinal extension of tissue stop 46 ', and is projected on the upper surface of tissue stop 46 '.Ramp member 47 ' is preferably inflexible, and in height increases to far-end 46b ' from the near-end 46a ' of tissue stop 46 '.On angle according to the special angle of jaw and difference.Ramp member 47 ' is the just nearside termination of the reception of the tissue in being formed on the distal end of tissue stop 46 ' groove 46c ' preferably.As a result, ramp member 47 ' just nearside navigates to jaw 20, allows the end (just promoting anchor clamps) of ramp member 47 ' guide clamp and propulsion component 40 to enter jaw 20 with suitable angle like this.In use, ramp member 47 ' butt is arranged in the lower surface on the summit of the anchor clamps between the jaw 20, to prevent that clip vertical pivots during jaw 20 closed formation anchor clamps.Particularly, when propulsion component 40 when ramp member 47 ' moves to the farthest side position, the surface of the summit butt ramp member 47 ' of anchor clamps.Because anchor clamps pressurized and clip legs move relative to each other between jaw 20, jaw 20 will only engage the sweep on each lower limb.As a result, the lower limb of anchor clamps will can vertically not pivot with the summit.Yet, because the summit rests on the upper surface 47a ' of ramp member 47 ', ramp member 47 ' with regard to prevent the summit along downwards or direction down move both vertically, that is, ramp member 47 ' will prevent that anchor clamps from swinging in jaw 20.Ramp member 47 ' produces deleterious revolving force during preventing or be limited in jaw 20 closed formation anchor clamps effectively.Keep anchor clamps to aim at like this with jaw 20.
Shape, size and the structure that it will be understood by those skilled in the art that ramp member can be according to the ad hoc structure of other parts of jaw and clip applier and is different.In an one exemplary embodiment, ramp member 47 ' can have about 0.025 " maximum height h Rmax(measuring) from the central plane that extends through tissue stop 46 '.More preferably, height h RmaxAbout 0.008 " to 0.020 " in the scope, and height h RmaxBe preferably in about 0.010 " to 0.015 " in the scope.The inclined angle alpha of ramp member 47 ' RAlso can change, but in an exemplary embodiment, ramp member 47 ' has the inclined angle alpha in about 5 ° to 45 ° scopes R, more preferably in 5 ° to 30 ° scopes, be preferably in 10 ° to the 20 ° scopes.The width W of ramp member 47 ' rAlso can change, but in an exemplary embodiment, ramp member 47 ' preferably has the width W that is slightly less than the gap between the jaw 20 of complete make position r
Figure 12 illustrates tissue stop 46 in use.As shown, tissue stop 46 just is positioned at below the jaw 20, and the position at place allows conduit, vascular, isocon etc. to be received between jaw 20.As further shown, location surgical clip 36 between jaw 20 is so that the sweep 36a of anchor clamps 36 aims at tissue stop 46.This will allow the lower limb 36b of anchor clamps 36 to locate fully around conduit, vascular, isocon or other target location.
Figure 13-26B illustrates the multiple exemplary internal components of the shell 12 that is used to control the anchor clamps propelling and forms.As described above, surgical clip applier 10 can comprise some or all parts disclosed herein, and it can comprise multiple other parts known in the art.In particular exemplary embodiment, the internal part of clip applier 10 comprises: the anchor clamps propulsion assembly, and its anchor clamps propulsion assembly with axle 18 is connected, and is used to advance at least one anchor clamps by slender axles 18, anchor clamps are positioned between the jaw 20; Form assembly with anchor clamps, it can be connected with the anchor clamps formation assembly of axle 18, is used for closed jaw 20 to form the anchor clamps of part or all of closure.Other example components comprises the anti-retrogression mechanism that is used to control trigger 16 motions, is used to prevent to form the overload mechanism that assembly is applied to the power overload of jaw 20 by anchor clamps, and the anchor clamps Quantity Indicator that is used for indicating the anchor clamps quantity of staying device 10.
Figure 13-16D illustrates and is used for making the one exemplary embodiment of feed bar 38 at the anchor clamps propulsion assembly of the shell 12 of axle 18 motions.Usually, the anchor clamps propulsion assembly comprises the trigger insert 48 that is connected with trigger 16, feed bar coupling 50 that cooperates with the near-end 38a of feed bar 38 and the feeding connecting rod 52 that is suitable for extension between trigger insert 48 and feed bar coupling 50, this feeding connecting rod 52 is used for motion slave flipflop insert 48 is delivered to feed bar coupling 50.
Figure 14 illustrates in greater detail trigger insert 48.The shape of trigger insert 48 can change according to other parts of shell 12, but in the illustrated embodiment, trigger insert 48 comprises and is suitable for the middle body 48a that cooperates pivotally with shell 12, and is suitable for the elongated portion 48b that stretches into trigger 16 and cooperate with trigger 16.Middle body 48a can comprise the hole 106 of running through its extension, is used to receive the axle that is used for pivotally trigger insert 48 being coupled to shell 12.Middle body 48a also can comprise first groove 108 that is formed at upper edge, is used for receiving unit feeding connecting rod 52.First groove 108 preferably has the size and dimension that allows part feeding connecting rod 52 to extend therein so that when trigger insert 48 because the motion of trigger 16 when pivoting, forces feeding connecting rod 52 pivots.As shown in figure 14, first groove 108 is elongated basically and comprises the circular basically part that is formed on wherein, is used to settle the axle that is formed on feeding connecting rod 52 near-ends, as reference Figure 16 in greater detail.Trigger insert 48 also comprises second groove 110 that is formed at posterior edges, is used to receive and is used for the closed connecting rod roller 54 that the push rod 44 of motion cam 42 with closed jaw 20 is connected; Also comprise the ratchet 112 that is formed on its bottom edge, be used for cooperating, as below will be in greater detail with the ratchet 60 of control trigger 16 motion.
Figure 15 A and 15B illustrate in greater detail exemplary feed bar coupling 50, and it is suitable for the near-end of feed bar 38 is connected to the far-end of feeding connecting rod 52.Though can use multiple technologies that feed bar coupling 50 is connected with the near-end 38a of feed bar 38, in the one exemplary embodiment that illustrates, feed bar coupling 50 is formed by two half 50a of, 50b that separate, and they cooperate together to remain on the near-end 38a of the feed bar 38 between it.When cooperating, two and half 50a of, 50b limit central shaft 50c together, and this central shaft 50c has almost circular flange 50d, the 50e that is formed on its opposite end, and are defined for the groove 50f of the far-end of settling feeding connecting rod 52 between them.Central shaft 50c forms the chamber 50g run through wherein, and its near-end 38a that is used to receive feed bar 38 is locked in fixed basically position with being used for feed bar 38 relative feed bar couplings 50.Yet feed bar coupling 50 can form one with feed bar 38, and it can have and is easy to multiple other shape and size of cooperating with feeding connecting rod 52.
Figure 16 illustrates exemplary feeding connecting rod 52, and it can extend between trigger insert 48 and feed bar coupling 52.Usually, feeding connecting rod 52 has near-end 52a and far-end 52b and has flat basically elongated shape.Near-end 52a is suitable for rotatably being positioned at first groove 108 of trigger insert 48, and as previously mentioned, and it can be included in axle 53 (Figure 1B) that wherein extend.Axle 53 can be suitable for rotation pivotly in first groove 108 of trigger insert 48, allows trigger insert 48 pivot feeding connecting rods 52 with this.The far-end 52b of feeding connecting rod 52 can be suitable for being connected to feed bar coupling 50, and in an exemplary embodiment, it comprises relative arm 114a, 114b formed thereon, and arm 114a, 114b are defined for the opening 116 of the central shaft 50a that settles feed bar coupling 50 betwixt.When feeding connecting rod 52 when pivot X pivots, arm 114a, 114b effectively with coupling 50 engage and make it the motion.Pivot X is limited with the position that shell 12 is connected by feeding connecting rod 52, and he can be positioned on any position on the feeding connecting rod 52, but in the illustrated embodiment, the near-end 52a location of its contiguous feeding connecting rod 52.
In an exemplary embodiment, feeding connecting rod 52 can be flexible, thereby needn't calibration clamp propulsion assembly and anchor clamps formation assembly.Especially, feeding connecting rod 52 even behind the farthest side position, also allow trigger 16 to continue to the make position motion at feed bar 38 and feed bar coupling 50, and it forms assembly to anchor clamps and the anchor clamps propulsion assembly provides some degree of freedom.In other words, during trigger closes, trigger 16 relative feed bars 38 are compliances.
The concrete rigidity of feeding connecting rod 52 and intensity can change according to the structure of anchor clamps propulsion assembly and anchor clamps formation assembly, but in an one exemplary embodiment, the rigidity of feeding connecting rod 52 arrives in the scope of 110lbs at per inch 75, more preferably about per inch 93lbs (measurement at the interface between connecting rod 52 and feed bar coupling 50), its intensity at per inch 25lbs in the scope of 50lbs, more preferably about 35lbs.Feeding connecting rod 52 can also be made of a variety of materials, and comprises various polymers, metal etc.A kind of exemplary material is the tempered glass Polyetherimide, but can use multiple reinforced themoplastic plastics, comprises tempered glass liquid crystal polymer, tempered glass nylon and their reinforcement carbon fibre variant and similar thermoplastic.Also can use reinforcing fiber thermoset polymer, for example thermosetting polyester.Feeding connecting rod 52 can also be made by metal (for example spring steel), with the elasticity of realization qualification and the desirable combination of controllable intensity.
Figure 17 A and 17D illustrate exemplary anchor clamps propulsion assembly in use.Figure 17 A shows initial position, and wherein trigger 16 places deployed position, and feed bar coupling 50 and feed bar 38 are at nearest side position, and feeding connecting rod 52 extends between trigger insert 48 and feed bar coupling 50.As previously mentioned, in initial deployed position, projection 86 is on feed bar 38, and elongated slot 88 nearsides in jaw keeper axle 28 are located.First biasing member (for example spring 120) is connected with shell 12 with trigger insert 48, so that trigger insert 48 and trigger 16 are remained on deployed position, and second biasing member (for example spring 122) extends between axle coupling 124 and feed bar coupling 50, so that feed bar coupling 50 and feed bar 38 are remained on nearest side position, described axle coupling 124 makes axle 18 cooperate rotatably with shell 12.
When actuating trigger 16 and when it is moved towards make position (promptly towards fixed handle 14), overcome the biasing force that applies by spring 120,122,48 beginnings of trigger insert pivot in the counterclockwise direction, shown in Figure 17 B.The result forces feeding connecting rod 52 to pivot in the counterclockwise direction, thus distal motion feed bar coupling 50 and feed bar 38.Distal motion in the elongated slot 88 of the projection on the feed bar 38 86 in jaw keeper axle 28 advances feeding shoe 34 and the anchor clamps 36 that are arranged in the anchor clamps track 30 with this.Spring 120 extends between shell and trigger insert 48, and spring 122 compression between feed bar coupling 50 and axle coupling 124.
Along with further actuating trigger 16, trigger insert 48 continues to pivot, and feed bar coupling 50 and feed bar 38 finally reach the farthest side position.In this position, the projection on the feed bar 38 86 is positioned at the far-end of slits 88 in the jaw keeper axle 28, and positioning fixture is between jaw 20, as previously mentioned.Spring 122 is compression fully between axle coupling 124 and feed bar coupling 50, and feeding connecting rod 52 is with deflection, shown in Figure 17 C and 17D.When in case 52 deflections of feeding connecting rod, the 52 complete deflections of preferred feeding connecting rod form the closed jaw 20 of assembly with regard to actuated clamps.During actuated clamps forms assembly, the second stage of Zhi Donging for example, feeding connecting rod 52 will keep deflection, so that trigger insert 48 is compliances with respect to anchor clamps propulsion assembly, particularly feed bar 38.
The exemplary anchor clamps that Figure 18-20 is shown in further detail shell form assembly.Usually, anchor clamps form arrangement of components shell 12 in and can be effectively jaw 20 motion push rods 44 and cam 42 relatively, arrive make position with motion jaw 20, flatten localized betwixt anchor clamps with this.Though anchor clamps form assembly different structures can be arranged, in the one exemplary embodiment that illustrates, anchor clamps form assembly and comprise closed connecting rod roller 54, it is connected to trigger insert 48 slidably, closed connecting rod 56 is suitable for being connected to closed connecting rod roller 54, and closed coupling 58 is suitable for being connected to closed connecting rod 56 and push rod 44.
Figure 18 is shown in further detail closed connecting rod roller 54, and as shown, closed connecting rod roller 54 comprises central shaft 54a, and it has basic flange 54b, 54c for circle that contiguous its relative terminal forms.Central shaft 54a can be suitable for being arranged in second groove 110 of trigger insert 48, so that flange 54b, 54c are contained on the opposite side of trigger insert 48.Central shaft 54a also is suitable for cooperating with relative arm 126a, the 126b of closed connecting rod 56, so that this arm is positioned on the opposite side of trigger insert 48.
Figure 19 has been shown in further detail the one exemplary embodiment of closed connecting rod 56, and as shown, it has in a certain distance apart from one another relative arm 126a, 126b.Each arm 126a, 126b comprise near-end 128a, 128b, they are suitable for engaging with the central shaft 54a of closed connecting rod roller 54, and far-end 130a, 130b are suitable for cooperating with closed coupling 58, are used for closed connecting rod roller 54 and closed connecting rod 56 are connected to push rod 44.In an exemplary embodiment, near-end 128a, the 128b of each arm 126a, 126b is suitable for cooperating pivotally with closed connecting rod roller 54, and arm 126a, 126b can comprise hook shape component 132a, 132b for example formed thereon, are used for engaging with central shaft 54a.Hook shape component 132a, 132b extend to be easy to joint between closed connecting rod 56 and closed connecting rod roller 54 along relative direction.Far-end 130a, the 130b of arm 126a, 126b are fitted to each other, and they can comprise the chamber 134 of extending perforation, are used to receive the axle that is suitable for being coupled to pivotally with closed connecting rod 56 closed coupling 58.It will be understood by those skilled in the art that and to use other multiple technologies that closed connecting rod 56 is coupled to closed connecting rod roller 54 and closed coupling 58.
The exemplary closed coupling 58 that Figure 20 A is shown in further detail, as shown, it comprises portions of proximal 58a, and it has two arm 136a, 136b, this arm has chamber 138a, the 138b that extends perforation and is suitable for aiming at the chamber 134 of closed connecting rod 56, is used for receiving axes to cooperate with two parts.Closed coupling 58 also comprises distal part 58b, and it is suitable for cooperating (Fig. 9) with the near-end 44a of push rod 44.In an exemplary embodiment, closed coupling 58 comprises the otch 59 (Figure 20 B and 20C) that is formed at wherein and has the shape of the near-end 44a that is suitable for settling push rod 44.Also the distal part 58b of closed coupling 58 is configured as when trigger 16 receiving unit feed bar coupling 50 during in deployed position.It will be understood by those skilled in the art that the technology that can use multiple other cooperation is coupled to closed coupling 58 on the push rod 44, closed coupling 58 and push rod 44 can at random form as one each other.
In other one exemplary embodiment, between push rod 44 and closed coupling 58, can form the preload fastener and discharge from jaw is unexpected, particularly at the commitment of closure, if user loosens on trigger 16 to prevent anchor clamps.Concrete, though below will be described herein in more detail, anti-retrogression mechanism can be suitable for preventing that trigger 16 from opening up to trigger 16 arrives precalculated positions, anti-retrogression mechanism allows trigger 16 some light exercises.Like this, when user loosens on trigger 16 and the incident of trigger 16 light exercises is taken place, preload fastener distal direction bias voltage push rod 44, keep push rod 44 in the basic fixed position with this, though allow closed coupling 58 proximal motion to engage by anti-retrogression mechanism up to trigger 16.
Though the preload fastener can have multiple structure, and can form each location positioning of assembly along anchor clamps, in one embodiment, the preload fastener be arranged in form with biasing member in otch 59 with to far-end bias voltage push rod 44.Though can use the multiple bias member, in the embodiment shown in Figure 20 B, biasing member is a cantilever beam 61, and its rear wall that is positioned at the near-end 44a of push rod 44 and groove 59 is with to far-end bias voltage push rod 44.Cantilever beam 61 can be made of shape-memory material (for example Nitinol), allows beam 61 crooked or flatten when the power that it applied to near-end.Cantilever beam 61 can or be strengthened polymer by other material, for example spring steel and constitute, and can use a plurality of beams.Figure 20 C illustrates another embodiment of the biasing member that the spring 63 by coil or other type forms.As shown, spring 63 rear wall that is arranged in the near-end 44a of push rod 44 and groove 59 is with to far-end bias voltage push rod 44.Spring 63 is suitable for compression when the power that it applied to near-end.It will be understood by those skilled in the art that and to use multiple other biasing member, comprise the compression element of elastomeric material.
The preload fastener also optionally comprises parts, to strengthen the performance of cantilever beam or spring during the anchor clamps forming process.In the embodiment shown in Figure 20 B, because cantilever beam compresses at period of contact, originally the load of cantilever beam 61 keep evenly, yet obviously increase in the final stage load of closure.This is shown in Figure 20 D, and Figure 20 D illustrates the chart of the load/displacement curve of the cantilever beam 61 shown in Figure 20 B.The left end of curve is represented cantilever beam 61 uncharged height, and the right-hand member of curve is represented the point that cantilever beam 61 all compresses or flattens.Above curve representation during typical closed stroke, cause the power of cantilever beam 61 compression, be compressed in the power that the free state of cantilever beam 61 surveys by part initially in the time of in cantilever beam 61 is arranged in closed coupling 58.As shown, load kept stable (except initial compressed state), because cantilever beam 61 is compressed, load is just slight to be increased during typical closed stroke.Yet when cantilever beam 61 flattened fully, load significantly increased in closed terminal stage.This is because the distortion of cantilever beam 61 causes load inwardly to be transmitted from the terminal of cantilever beam 61.Because the distortion of cantilever beam 61 and the inside transmission of load, the effective length of cantilever beam 61 reduces, and has increased load with this.For this being prevented the preload fastener from optionally comprising parts, during forming, strengthen the performance of cantilever beam or spring, and particularly keep basicly stable load at anchor clamps.
Figure 20 E illustrates the one exemplary embodiment of the technology of the performance that is used to strengthen cantilever beam or spring.As shown, the groove 59 ' in closed coupling 58 ' is included in wherein two convex ridge 59a ', the 59b ' of being formed on the rear surface, so that convex ridge 59a ', 59b ' are positioned at the following or back of cantilever beam (not shown).Convex ridge 59a ', 59b ' spaced from each other and each convex ridge 59a ', 59b ' have at least about 0.005 " height, come to the rear surface of groove to prevent that cantilever beam from flattening fully.As a result of, convex ridge 59a ', 59b ' prevent that cantilever beam from flattening, and inwardly are transmitted to terminal with this load that prevents cantilever beam or spring.The particular location, quantity and the size that it will be understood by those skilled in the art that convex ridge 59a ', 59b ' can prevent that anchor clamps from dropping out required power and difference according to the structure of preload fastener and at period of contact.
Return A-17D, in use,, roll in the groove 110 of closed connecting rod roller 54 in trigger insert 48 when trigger 16 during from the deployed position setting in motion to make position with reference to Figure 17.In case feed bar 38 and feed bar coupling 50 are in the farthest side position, shown in Figure 17 C, the further actuating of trigger 16 will cause trigger insert 48 inner groovies 110 to engage with closed connecting rod roller 54, force it to pivot with trigger insert 48, shown in Figure 17 D.As a result of, closed coupling 58 distal motion cause push rod 44 distal motion with this.When push rod 44 distad advances, advance cam 42 to cross jaw 20 with closed jaw 20 and the localized betwixt anchor clamps of flattening.Trigger 16 at random part is closed with closed jaw 20 of a part and the localized betwixt anchor clamps of part flattening.Be used to be easy to select fully and part is flattened betwixt the exemplary technique of localized anchor clamps and will will be described in more detail below.In case discharged anchor clamps, can discharge trigger 16, allow spring 120 that trigger insert 48 is withdrawn into its initial position with this, and allow spring 122 to force feed bar coupling 50 and feed bar 38 to get back to proximal position.When trigger insert 48 turned back to its initial position, closed connecting rod roller 54 turned back to its initial position equally, with this closed connecting rod 56, closed coupling 58 and push rod 44 proximads was drawn.
Surgical clip applier 10 also can comprise multiple other parts, to be easy to the use of device 10.In an one exemplary embodiment, surgical clip applier 10 comprises the anti-retrogression mechanism that is used to control trigger 16 motions.Concrete, anti-retrogression mechanism can prevent the unlatching of trigger 16 during the closed percussion of part.Yet in case trigger reaches the precalculated position, but in this point localized anchor clamps part crimping between jaw, anti-retrogression mechanism can discharge trigger and allow trigger to open and release clip or closed to flatten anchor clamps fully, and is desirable as user.
Figure 21 A and 21B illustrate the one exemplary embodiment of the anti-retrogression mechanism that is formed by ratchet.As shown, ratchet comprises the one group of teeth 112 that is formed on the trigger insert 48, the contiguous trigger insert 48 localized ratchets 60 with being suitable for being arranged in rotatably in the shell 12 are so that the closure of trigger 16 and 48 pivoted motions of trigger insert cause ratchet 60 to engage with teeth 112.Constituting teeth 112 like this, prevent ratchet 60 rotations, reach the precalculated position up to ratchet 60, is to rotate freely at this location point ratchet 60, allows trigger 16 closure or openness with this.The precalculated position is preferably corresponding to the position in jaw 20 part closures.In an one exemplary embodiment, as shown, teeth 112 comprise first group of teeth 112a (for example 10 teeth), and they have the size that prevents ratchet 60 relative its rotations, prevent trigger 16 unlatchings like this when ratchet 60 engages with first group of teeth 112a.Teeth 112 also comprise last or the terminal teeth, are called the teeth 112b of holder section, and when ratchet 60 engaged with the teeth 112b of holder section, it had the size that allows ratchet 60 relative its rotations like this.Concrete, the teeth 112b of holder section preferably has basically the size greater than first group of teeth 112a size, so that form big relatively notch 140 between first group of teeth 112a and Tuo Ke teeth 112b.Notch 140 has the size that allows ratchet 60 to pivot therein.Allow ratchet 60 optionally to shift out the teeth 112b of holder section or turn back to first group of teeth 112a like this.It will be understood by those skilled in the art that the teeth 112b of holder section can have same size or reduced size with first group of teeth 112a, also provide the notch 140 that is formed between it to pivot therein simultaneously to allow ratchet 60.
Figure 22 A-22D illustrates the ratch mechanism in the use.Shown in Figure 22 A, when setting in motion trigger 16 arrived make position, ratchet 60 engaged with first group of teeth 112a with this and prevents trigger 16 unlatchings.The further actuating of trigger 16 causes ratchet 60 to advance past first group of teeth 112a, arrives the notch 140 of the contiguous holder teeth 112b of section up to ratchet 60.In case ratchet 60 arrives the holder teeth 112b of section, crosses jaw 20 at this location point owing to cam 42 part distal movement, jaw 20 part closures, ratchet 60 rotates freely, and allows trigger 16 closure or openness with this, and is desirable as user.Figure 22 C illustrates trigger 16 in complete make position, gets back to deployed position and Figure 22 D and 22E illustrate trigger 16.
Ratch mechanism can also be designed to send audible sound, with the position of indication jaw 20.For example, when ratchet 60 engages with first group of teeth 112a, send first kind of sound, when ratchet 60 engages with the teeth 112b of holder section, send second kind of different sound, for example, loud.As a result, when trigger 16 reached ratchet 60 with precalculated position that Da Tuoke teeth 112b engages, sound indication user: jaw 20 was in the part make position.User can discharge the anchor clamps of trigger 16 with the release portion closure, but or their closure trigger 16 with complete closed anchor clamps.
In another one exemplary embodiment, surgical clip applier 10 comprises overload mechanism, transships to be suitable for the power by trigger 16 is applied on the jaw 20 that prevents.Typically, during surgical clip applies, need the closed jaw 20 of specific power and flatten to center on the anchor clamps that are positioned at tissue therebetween.Owing to the carrying out of forming process with to small part closed clamp tool, continue closed hoop and obviously rise around the jaw 20 required power of anchor clamps.In view of the above, in an exemplary embodiment, overload mechanism has the resistance of the power required with respect to closed jaw 20.In other words, the resistance of overload mechanism can raise along with the rising of the required power of closed jaw 20.Yet this resistance is preferably less times greater than the required power of closed jaw 20, to prevent the accidental activation of supercharger structure.As a result, if prevent jaw 20 closures when trigger 16 begins to activate, the required power of resistance that overcomes overload mechanism is relatively low.This is to more yielding jaw 20 advantageous particularlies when they are opened or only partially open.Overload mechanism is easier of to prevent the distortion of jaw in the early stage actuating of anchor clamps shaping.On the contrary, basic when closed when jaw 20, resistance is high relatively, so that only activate overload mechanism when application is applied to the big power of jaw 20.
Figure 23 A illustrates the one exemplary embodiment of overload mechanism, shows exploded view.Usually overload mechanism comprises the overload shell 64 that is formed by two and half 64a of, 64b, and this overload shell 64 holds wing connecting rod 66, elbow connection rod 68, pivot links 70 and bias assembly 72.Bias assembly 72 comprises the spring stack 150 that is connected with shell and comprises the hole that the extension that is used to hold striker 154 connects.Spring 152 arranges that around spring stack 150 striker 154 extends perforation spring stack 150 and comprises head 154a formed thereon, and this head 154a is suitable for butt spring 152.Pivot links 70 is L shaped usually and can be connected to shell 64 by extending the pivot pin 156 that connects.The near-end 70a of pivot links 70 can contact with the head 154a of striker 154, and the far-end 70b of pivot links 70 can be connected to elbow connection rod 68 by pivot pin 166.Elbow connection rod 68 is connected to wing connecting rod 66 again, and this wing connecting rod 66 is positioned contiguous being formed in the shell 64 of shell inner opening 64d slidably and pivotally.The pivoting action of realizing the wing connecting rod 66 in the shell 64 can be by for example pivot pin 158, this pivot pin 158 extends the wing connecting rod 66 of perforation and is arranged in the interior first slit 160a interior (only showing a slit) of each half 64a of, 64b that is formed at shell 64, and the slidably motion that realizes wing connecting rod 66 in the shell 64 can be by for example being formed on relative projection 168a, the 168b on the wing connecting rod 66, and the interior second slit 160b (only showing a slit) of each half 64a of, 64b that this projection is formed on shell 64 receives.
In use, wing connecting rod 66 can be suitable for receiving from anchor clamps and form the power of assembly and revolt this power with the resistance of bias assembly 72.Particularly, overload mechanism 62 use springs 152 with elbow connection rod 68 and pivot links 70 from coming the wing connecting rod 66 of bias voltage around pivot pin 158 rotations or opposite shell 64 slips.For the rotation aspect, pass through elbow connection rod 68 and pivot links 70 by the power transmission of compression spring 152 effects, so that apply turning moment to the wing connecting rod 66 that faces shell 64.This assembly causes wing connecting rod 66 to stop the rotation of opposite shell 64 like this.If the moment that is produced by the radial load from closed connecting rod roller 54 to wing connecting rod 66 surpasses the moment of pivot links 70 and elbow connection rod 68, wing connecting rod 66 begins rotation, makes elbow connection rod 68 crooked and make further compression springs 152 of pivot links 70.For the slip aspect, pivot links 70, elbow connection rod 68 and wing connecting rod 66 aimed at, so that sliding force (resistance of slip) the required power that is crooked elbow connection rod 68 and pivot links 70.If the radial load from closed connecting rod roller 54 to wing connecting rod 66 surpasses the bending force of linkage, then pivot links 70 is further compressed spring 152, and same wing connecting rod 66 proximads slide.
This shows in greater detail in Figure 23 B-23C, and as shown, the closed connecting rod roller 54 that the opening 64d in shell 64 allows anchor clamps to form assembly rolls against wing connecting rod 66.As a result, when actuating trigger 16 and when moving to make position, 54 pairs of wing connecting rods 66 of closed connecting rod roller apply power.The resistance of overload spring 152 will remain on wing connecting rod 66 position of basic fixed, unless the power that is applied by closed connecting rod roller 54 is increased to this power greater than resistance, for example, threshold force.This can by for example be positioned at that exterior materials between the jaw 20 causes or when jaw 20 has anchor clamps and conduit, vascular, isocon etc. between it complete closure cause.When jaw 20 can not be further closed, the power that is applied to closed connecting rod roller 54 by the closing motion of trigger 16 is delivered to wing connecting rod 66 (it will pivot and slide) in shell 64, pivot links 70 is pivoted, force striker 154 compression overload springs 152 simultaneously.
As mentioned, the required power of overload mechanism and the closed jaw 20 required power that activate are associated, and closed jaw 20 required power move to make position along with trigger 16 and increase.This can be realized by the structure of wing connecting rod 66.Concrete, when closed connecting rod roller 54 at first contacted with wing connecting rod 66, it was in lower position, wing connecting rod 66 can pivot in shell 64, shown in Figure 23 B.When closed connecting rod roller 54 moves upward along wing connecting rod 66,, increase so overcome the required power of the resistance of overload mechanism, shown in Figure 23 C because wing connecting rod 66 must slide in shell 64.Wing connecting rod 66 pivots required power less than the required power of wing connecting rod 66 slips.In view of the above, if prevent jaw 20 closures when trigger 16 begins to activate, for example owing to exterior materials, required less power just causes closed connecting rod roller 54 to transmit the bottom of these power to wing connecting rod 66, causes the pivot of wing connecting rod 66.When jaw 20 basic closed and almost completely during actuating trigger 16, required very big power causes closed connecting rod roller 54 to transmit the top of these power to wing connecting rod 66, causes the slip of wing connecting rod 66 in shell 64 to overcome the resistance of overload spring 152.Though the size that activates the required power of overload mechanism is greater than the size of closed jaw 20 required power and raise relatively to some extent, this power is preferred only less times greater than the required power of closed jaw 20, with distortion or other damage that prevents jaw 20.It will be understood by those skilled in the art that resistance can adjust according to closed jaw 20 required power.
The surperficial 66s towards the distally of wing connecting rod 66, particularly wing connecting rod 66 also has such shape, and this shape is easy to make activate between the required power of the required power of overload mechanism and closed jaw 20 and is associated.For example, the place that closed jaw 20 required power increase with linear velocity, the surperficial 66s towards the distally of wing connecting rod 66 is planar, disturbs the motion of closed connecting rod roller 54 to prevent wing connecting rod 66, and allows jaw 20 is applied linear force with closed jaw 20.On the contrary, motion trigger 16 during to make position closed jaw 20 required power are non-linear places, wing connecting rod 66 has nonlinear shape, this shape is corresponding to nonlinear power.This structure prevents that closing cam 42 required power (Fig. 8) from becoming too high.
As limiting examples, closed jaw 20 required power can be non-linear, and this is owing to the shape at cam 42 inner groovies 104 is suitable for promoting towards each other jaw member 96a, 96b.As shown in Figure 8, groove 104 can have warp architecture so that this power changes when cam 42 is crossed jaw member 96a, 96b.The surface towards the distally that therefore wing connecting rod 66 can have respective curved is so that this power changes when closed connecting rod roller 54 is crossed the there.Shown in Figure 23 A and 23B, wing connecting rod 66 is crooked, and the bottom of wing connecting rod 66 is convex substantially, and the top of wing connecting rod 66 is concavity substantially.It will be understood by those skilled in the art that wing connecting rod 66 can have multiple other shape, and can use the required power of the closed jaw of multiple other technical optimization 20 and activate the required power of overload mechanism.
Those of ordinary skills be also to be understood that overload mechanism can have multiple other structure.As limiting examples, it is the form of cantilever beam 170 that Figure 23 D illustrates overload mechanism, is used to receive the power that is applied by closed connecting rod roller 54.Beam 170 can have the general curved member 172 that has the support 174 that is connected to the one end.Bent member 172 has moment of flexure, and is when the power that loads during greater than moment of flexure, crooked to present low rigidity situation.Support 174 can provide higher rigidity to member 172, so that the moment of flexure of near bracket 174 raises.In use, beam 170 can be positioned in the shell 12 of surgery applicator 10, so that closed connecting rod roller 54 contacts with concave surface, and positioning beam 170 at a certain angle, so that when trigger 16 begins to activate closed connecting rod roller 54 away from beam, and when trigger 16 moved to make position, closed connecting rod roller 54 was close with beam.Consequently, when 54 motions of closed connecting rod roller and the trigger 16 of surgery applicator when moving to make position, bending resistance increases.Though do not illustrate, mode that can lamination is used a plurality of beams arbitrarily and the terminal of beam or free-ended profile is formed along the particular location of beam length and adjusts warpage load.
In another one exemplary embodiment, surgical clip applier 10 comprises the anchor clamps Quantity Indicator, is used for indicating the anchor clamps quantity of staying device 10.Can use the remaining anchor clamps quantity of multiple technologies indication, Figure 24 A-25 illustrates the one exemplary embodiment of the anchor clamps Quantity Indicator with indicator wheel 74 and indicator actuator 76.
Figure 24 A and 24B are shown specifically indicator wheel 74, and as shown, it has circular or the columniform shape that limits central axis Y, and wheel 74 is suitable for the rotation around this central axis Y.Wheel 74 comprises and is formed on the teeth 142 around it and is suitable for engaging with indicating element 144 by indicator actuator 76.Indicating element 144 can have multiple structure, but in an one exemplary embodiment, and indicating element 144 is the form of the contrast colour disk of color with remainder that is different from indicator wheel 74 such as for example orange, red.
Figure 25 illustrates the one exemplary embodiment of more detailed indicator actuator 76.Actuator 76 is suitable for being arranged in slidably in the shell 12 and with feed bar coupling 50 and is connected, and it also moves when feed bar coupling 50 and feed bar 38 motions.Correspondingly, indicator actuator 76 comprises the projection 146 (part only is shown) that is formed on its lower surface, and it is used for extending into the groove 50f between round flange 50d, the 50e that is formed on the feed bar coupling 50.Projection 146 allows indicator actuator 76 with engaging and motion for rod coupling 50.Indicator actuator 76 can comprise that also formation and be suitable for engaging the engaging mechanism 148 of the teeth 142 that are formed on the indicator wheel 74 thereon.As shown in figure 25, the engaging mechanism 148 on the indicator actuator 76 is forms of arm, and described arm has and is formed on the small pieces that its end is used to engage teeth 142.
In use, shown in Figure 26 A-26B, indicator wheel 74 is arranged in the shell 12 rotatably, and indicator actuator 76 is suitable for being arranged in slidably in the shell 12, so that vicinity indicator wheel 74 locating engagement mechanisms 148, projection 146 stretches in the feed bar coupling 50.Shell 12 comprises the fenestra 12a that is formed at wherein, is used to provide the visual indicator wheel 144 that reads.When motion trigger 16 arrives make position and feed bar coupling 50 distal motion, indicator actuator 76 and feed bar 38 and feed bar coupling 50 distal motion.As a result, will be bonded on teeth 142 on the indicator wheel 74, when anchor clamps are advanced into jaw 20, make wheel 74 rotations with this at the engaging mechanism on the indicator actuator 76 148.Each actuating trigger promotes anchor clamps and enters jaw 20, indicator actuator 74 rotation indicator wheels 76.When two or three anchor clamps were left in the anchor clamps supply, the contrast colour disk 144 on indicator wheel 74 began to appear at the fenestra 12a that is formed in the shell 12, indicated user only to be left several anchor clamps with this.When the anchor clamps supply was used up, contrast colour disk 144 appeared among the whole fenestra 12a.
In another one exemplary embodiment, indicator wheel 74 comprises anti-retrogression mechanism, its be suitable for preventing indicator wheel 74 after propelling round about, for example rotation counterclockwise.Though anti-retrogression mechanism can have multiple structure, in Figure 24 B illustrated embodiment, indicator wheel 74 comprises relative arm 73a, 73b, and they and Y-axis are extended substantially parallel.Each arm 73a, 73b have ratchet 75a, the 75b that is formed on its farthest side, and they are suitable for engaging the teeth that are formed on correspondence on the shell 12.Though not shown, corresponding teeth can be formed in the circular projection, on the inner surface of the contiguous fenestra 12a that this projection forms at shell 12.In the time of in indicator wheel 74 is arranged in shell 12, arm 73a, 73b stretch in the circular projection that week forms in it.When applying anchor clamps and indicator wheel 74 rotations, arm 73a, 73b deflect past teeth in the enclosure and move to next position.When indicator wheel 74 proximads slide when returning its initial position, arm 73a, 73b engage with in the enclosure teeth, rotate round about to prevent indicator wheel 74, promptly get back to initial position.It will be understood by those skilled in the art that and to use multiple other technology to prevent the revolution of indicator wheel 74.
As previously mentioned, can use the partially or completely closed anchor clamps of surgical clip applier 10 dispensings to for example surgical site such as conduit, vascular, isocon.In peritoneoscope and endo-surgical, make a little otch so that the passage of arrival to be provided at patient body.Typically use sleeve pipe or passway limit from skin incision to the operation position service aisle.In surgical operation, often need stop blood flow, and in some operations, need to use isocon by conduit or vascular.Can use surgical clip to come the crimping conduit or close isocon at this to conduit.In view of the above, surgical clip applier, for example clip applier 10 can be introduced surgery location by intubate or other, with jaw 20 be positioned at vascular, isocon or other conduits around.Tissue stop 46 can be convenient to the location of jaw 20 surrounding target positions.Then actuating trigger 16 advances anchor clamps and the surrounding target location positioning between jaw, and makes the jaw 20 closed anchor clamps that flatten.According to the anchor clamps of planning to use, trigger 16 can partly activate, and is indicated by the sound of hearing of the ratchet 60 arrival holder teeth 112b of section, or trigger 16 can all activate.Then discharge trigger 16, with release portion or closed fully anchor clamps, and apply other anchor clamps if desired, this process can repeat.
Those of ordinary skills will further understand parts of the present invention and advantage based on the foregoing description.In view of the above, the present invention and can't help concrete shown in and described restriction, unless additional claims explanations.All publications cited herein and list of references clearly are incorporated among the application by reference at this in full.

Claims (7)

1. improved endoscopic surgical clip applier, this applicator have the closed together jaw near tissue to be clamped, and have and be suitable for a plurality of anchor clamps are advanced to anchor clamps propulsion assembly in the described jaw continuously, it is characterized in that:
The part of anchor clamps propulsion assembly comprises pusher mechanism, this arrangement of mechanism also can be to the jaw motion to be advanced to a plurality of anchor clamps in the jaw continuously in the anchor clamps track, described pusher mechanism is suitable for producing frictional force with the anchor clamps track, to prevent the by mistake motion of this pusher mechanism in the anchor clamps track, and activated when distad promoting pusher mechanism when the anchor clamps propulsion assembly, described pusher mechanism is suitable for motion.
2. endoscopic surgical clip applier as claimed in claim 1, wherein, described pusher mechanism comprises formed thereon and contacts with the anchor clamps track to produce the projection of frictional force with the anchor clamps track.
3. endoscopic surgical clip applier as claimed in claim 1, wherein, described pusher mechanism comprises that formed thereon and bias voltage anchor clamps track is to produce the flexible tang of frictional force with the anchor clamps track.
4. endoscopic surgical clip applier as claimed in claim 3, wherein, described flexible tang comprises that formation and be suitable for engaging the flange that is formed on the respective ridges in the anchor clamps track thereon.
5. endoscopic surgical clip applier as claimed in claim 1, wherein, described pusher mechanism has cantilever structure, to produce frictional force with the anchor clamps track.
6. endoscopic surgical clip applier as claimed in claim 1, wherein, described anchor clamps track comprises the stayed surface that has along the opposing sidewalls of its extension, and described pusher mechanism is arranged between the opposing sidewalls slidably.
7. endoscopic surgical clip applier as claimed in claim 6, wherein, described opposing sidewalls is advanced to be essentially in the cross section of V-arrangement with the pusher mechanism bias voltage.
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US9717504B2 (en) 2017-08-01
US20100249804A1 (en) 2010-09-30
US20170273689A1 (en) 2017-09-28
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HK1104438A1 (en) 2008-01-18
SG131067A1 (en) 2007-04-26
CA2560359C (en) 2014-07-22
DE602006006627D1 (en) 2009-06-18
US20060235442A1 (en) 2006-10-19
JP2007075620A (en) 2007-03-29
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RU2006133127A (en) 2008-03-20
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ATE430520T1 (en) 2009-05-15
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US20110218555A1 (en) 2011-09-08
US7740641B2 (en) 2010-06-22
RU2433792C2 (en) 2011-11-20
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US8246635B2 (en) 2012-08-21
US20140343578A1 (en) 2014-11-20
BRPI0604714A (en) 2007-08-28
US8821516B2 (en) 2014-09-02
JP5089944B2 (en) 2012-12-05
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KR101283901B1 (en) 2013-07-16
KR20070031820A (en) 2007-03-20

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